http://law.anu.edu.au/criminet/tmensrea.html
Overview
This section will examine the basic elements of mens rea, that is the 
mental ingredient of criminal offences.  It examines the law's 
preference for subjective rather than objective standards, and the 
effect of mistake and intoxication on mens rea.
Mens rea
Mens rea in Latin means guilty mind.  It is used in the criminal law as
 a shorthand term to describe the various subjective mental states which
 accompany the actus reus.  There is a clear preference in the criminal 
law for subjective fault elements.  For both common law offences and 
statutory offences there is a presumption of mens rea.  Refer to He Kaw 
Teh at BFW 352.  There is a quote from the 19th century decision Tolson 
(1889) which is regarded as establishing the preference for subjective 
mental states.  Professor Glanville Williams in his text book describes 
mens rea as the mark of advancing civilisation.
The subjective mental states are intention, knowledge and recklessness. 
 Other words have been used to connote mens rea, such as "maliciously", s
 5 Crimes Act 1900 (NSW) see BFW 347..  This preference for subjectivity
 is related to the liberal philosophical justification for criminal 
punishment.  Legal philosopher HLA Hart said that the principle of 
criminal punishment should be restricted to those who have voluntarily 
broken the law.  This means that the decision to break the law was the 
outcome of a free choice.  This principle suggests that a person should 
be punished only when he or she has recognised the harmful aspect of 
their conduct or consequences.  In other words the defendant must 
intend, know or was at least be aware of the risk (that is be reckless) 
as to the particular harm occurring.  The principle that a person should
 not be punished without proof of fault is at the heart of the criminal 
law.  The influence of liberal theory on the criminal law explains the 
modern judicial preference for subjective mental states.
The Meaning of Intention:  Illusive or Illusory
Intention is the most stringent of the subjective mental states.  At the
 outset I should warn you that intention, a word used daily in legal 
practice, has evaded precise legal definition.  The high point of the 
controversy over intention occurred in England in 1961 with the House of
 Lords decision DPP v Smith (1961), BFW 399, BWW 176.  Prior to that 
decision, the trend in the cases in the 20th century had been to 
restrict the scope of objective forms of criminal liability.  The 
preference for subjective mental states means that criminal liability 
must be determined by reference to the actual state of mind of the 
defendant, rather than by reference to what the ordinary person 
(formerly the reasonable man) ought to have known.  The English court 
flirted briefly with an objective meaning for intention in DPP v Smith. 
 The case concerned the meaning of intent for murder at common law.  
However, the defendant was driving a car containing stolen property.  A 
police officer directed him to pull over.  The defendant accelerated and
 the police officer clung on to the side of the car.  The police officer
 fell off and was killed.  The trial judge directed the jury using an 
objective test for intention.  The House of Lords endorsed the objective
 test, and held that a person is guilty of murder where an ordinary man 
would have foreseen that the defendant's action would result in death or
 grievous bodily harm.  The effect of this decision in the UK was 
repealed by section 8 of the Criminal Justice Act 1967 and the mens rea 
for murder is now subjective.
The Australian courts were strongly opposed to the objective formulation
 of mens rea used in  DPP v Smith, and the High Court in Parker (1963) 
criticised the House of Lords decision, BFW 399-400.  The High Court 
ruled that the decision did not form part of the common law for 
Australia.  The High Court's decision in Parker enables us to state 
confidently what the test of intention is not - intention is not 
determined by an objective test.  Rather the test of intention is 
subjective.
Intention is not the same thing as motive.  It is important to 
appreciate the distinction which the criminal law draws between 
intention and motive.  Motive, the reason for desiring or wishing a 
certain result, is traditionally said to be irrelevant to the criminal 
law, though it is relevant to sentencing.  As you shall see in some of 
the cases below, because of the irrelevance of motive, the courts are 
often forced to distort and restrict the meaning of intention to avoid a
 conviction where the defendant has acted for a good motive and ought 
not to be punished.
Intention:  Multiple Meanings 
Brennan J reviewed the "general principles" governing mens rea in He Kaw
 Teh, BFW at 357.  At the outset he recognises that the mens rea for 
each crime is distinctive and will vary from one crime to another.  
Brennan J then goes on to differentiate between voluntariness and 
intent.  Be warned that Brennan J takes an unusual approach to 
voluntariness in his judgment, viewing voluntariness as aspect of mens 
rea.  The more conventional view, and the view adopted by most 
commentators and judges, is that voluntariness is an aspect of the actus
 reus - the requirement that the defendant's conduct is voluntary.  If 
the defendant commits a crime in a state of involuntariness, there has 
been no voluntary action which can be the basis of criminal liability.]
Brennan J draws a number of distinctions in the use of the term intention in criminal offences:
He describes what is sometimes referred to by commentators and judges as
 the basic intent:  an intention to bring about a particular act 
specified by the offence, refer to BFN 360.  Brennan J uses the example 
of A striking B.  The basic intent is the defendant's intention to 
connect a fist with with B's face.
In the middle of passage Brennan J states "Intent, in another form, 
connotes knowledge":  BFW 359.  What does he mean by this?  Intent and 
knowledge are separate and different states of mind.  How can intent 
connote knowledge?  Brennan J is making the point that the mental states
 of intent and knowledge are related and in many cases intent will be 
based on knowledge.  In other words, intent presupposes knowledge.  He 
uses the example of A striking B.  So A's intentional striking of B 
requires A to have knowledge of B's presence.
Brennan J refers to another type of intent, specific intent.  This is 
where the crime prescribes a further result and the intent must extend 
to this consequence.  An example is an offence which requires the 
prohibited conduct to cause bodily harm, for example assault occasioning
 actual bodily harm.  Such an offence requires the defendant to possess a
  basic intent; that the defendant intends to commit an assault.  It 
also requires the defendant to possess a specific intent; that the 
defendant by the assault intends to cause actual bodily harm on the 
victim.
At the outset I should point out that there has been no High Court 
decision directly dealing with the meaning of intention in murder or any
 other offence.  The law accordingly is in a state of uncertainty.  The 
uncertainty stems from the judicial development of a narrow and extended
 definition of intention.
Brennan J defines intention as follows:  "a decision to bring about a 
situation so far as it is possible to do so".  He goes on to say that 
such a decision implies a desire or wish to do such an act or bring 
about a particular result.  This is the narrow form of intention, 
sometimes described as direct intention.  This is where the defendant 
aims to bring about the particular result.  The Model Criminal Code 
defines intention as the meaning to engage in that conduct or meaning to
 bring about that consequence: see BFW 375.  The most popular lawyers 
synonym for this form of intention is "purpose".
However the court have developed a broader form of intention, which is 
commonly referred to as oblique intention: BFW 375.  This is term is 
applied where the outcome of the defendant's conduct was not directly 
linked to his intention, but emerges obliquely as the consequence of 
that conduct.  The following hypothetical is often used to illustrate 
the point.  The person who intends to collect the insurance on a plane 
by placing a bomb on the plane timed to exploded in mid air.  That 
person does not have the direct intention to cause the death of the 
crew, but is aware that it is virtually certain to follow from his or 
her action.  Can it be argued that the person lacked the intention to 
kill the crew?  Should that person's foresight or belief that the 
particular result is virtually certain or probable to occur be regarded 
as intention for the purposes of the criminal law?
Oblique Intention in the English Courts
The English courts have grappled with this issue for more than twenty 
years in the context of murder.  For an excellent review of this legal 
development of oblique intention, see N Lacey, "A Clear Concept of 
Intention:  Ellusive or Illusory?" (1993) 56(5) Modern Law Review 621.
Hyam [1975] AC 55 is a good example of the some of the problems 
with employing this extended definition of intention.  The defendant 
poured petrol through a letter box and lit it in order, she claimed, to 
frighten the woman in the house.  In the ensuing fire, two of the 
woman's daughters died.  Hyam claimed that she had not intend to kill 
them.  The House of Lords defined intention in a broad way to include 
not only direct intention but also foresight of a probable consequence. 
 Lord Halisham took the view that intention does include foresight of a 
moral certainty.  So if the defendant foresees that death is a probable 
consequence of her actions, then the defendant has the relevant intent 
to kill.
But the effect of  Hyam was to introduce into the criminal law a broad 
definition of intention which overlaps with recklessness.  Recklessness 
in Australia for murder as foresight of a probable consequence, and for 
other offences is defined as foresight of a possible consequence.  
Subsequent decisions have attempted to tighten up the level of foresight
 required for oblique intent.  In 1985 the House of Lords reconsidered 
the Hyam decision in Moloney [1985] AC 905.  The defendant shot his step
 father with a shot gun at close range, but claimed that he had not had 
any intention to kill or hurt his victim.  There was alcohol involved 
but this was not raised as a defence.  There was also evidence that his 
step father had challenged him to pull the trigger "You havent got the 
guts to pull the trigger".   His state of mind is summed up at bottom of
 BWW at p. 165.
The House of Lords in Moloney, without expressly departing from Hyam, 
held that the degree of foresight has to be "little short of 
overwhelming before it will suffice to establish the necessary intent": 
 BWW at 171, per Lord Bridge.  In his view the "golden rule" is that 
judges should avoid unnecessary definitions or explanation of intention,
 leaving the meaning of intention to the good sense of the jury.  
However, Lord Bridge pointed out that the judge can still direct the 
jury as to what intention is not, ie that it is "something quite 
distinct from motive or desire"  :  BFW 171. 
Intention, Knowledge and the Role of Wilful Blindness?
The law has developed several techniques for inferring mens rea - wilful
 blindness is one such technique.  The term describes the state of mind 
of a person who suspecting the truth deliberately shuts his or her eyes 
to a particular fact:  see BFW 349.  With the emphasis placed on mens 
rea, and the need to prove actual knowledge or intention for serious 
crimes, this person presents a problem.  The early approach of the 
common law was to treat wilful blindness as equivalent to actual 
knowledge.  However, in recent cases the High Court has been reluctant 
to equate wilful blindness with knowledge.
In Kural (1987) BFW 350, the High Court had to determine the meaning of 
"intention to import a prohibited import" in s. 233B(1)(b) of the 
Customs Act 1901 (Cth).  The majority held that this intention did not 
require actual knowledge of what was being imported.  Belief, falling 
short of actual knowledge, could sustain an inference of intention.  
However, the majority pointed out that wilful blindness was not an 
alternative mental state for this offence, it was simply evidence which a
 jury could use to infer intention.
In the next case, 
Pereira (1989) BFW 350, the High Court 
considered the cognate offence to importation under the Customs Act 1901
 (Cth) - the offence of possession of a prohibited import .  The 
defendant was delivered a package containing cricket balls containing a 
quantity of cannabis resin.  The parcel had been posted in Bombay.  The 
defendant took delivery of the package, but had not opened it when the 
police raided her premises an hour later.  The trial judge directed the 
jury as to the importance of proving knowledge and that wilful blindness
 is the equivalent of knowledge.  The jury was directed the defendant 
would be wilfully blind if her suspicions about receiving a parcel from 
overseas were aroused and she refrained from making any enquiries for 
fear that she would learn the truth.
The majority made some observations about the role of and knowledge and 
wilful blindness, at BFW 350.  The majority referred to the earlier 
decision Kural, where the High Court ruled that the offence of importing
 a prohibited import did not require actual knowledge.  In  Pereira, by 
contrast, the High Court held that the offence of possession of a 
prohibited import did require actual knowledge.  The majority made three
 points.  So knowledge is actual knowledge not imputed knowledge.  It is
 never the case that a state of mind less than actual knowledge will 
suffice.  But the defendant's suspicion coupled with a failure to 
inquire, may be evidence which a jury can infer knowledge.
Kural and Pereira have both relegated wilful blindness to an evidential 
role.  A similar development occurred for oblique intention.  For both 
intention and knowledge there appears to be a tension between the 
technical rules governing the meaning of intention and knowledge, and 
the broad practical application of those rules by the jury.  Wilful 
blindness and oblique intention should be viewed essentially evidential 
concepts.  Indeed as the High Court hinted using terms like wilful 
blindness are liable to create confusion in the minds of the jury:  cf 
McConnell (1993) 69 A Crim R 39 NSW CCA.
Recklessness
Recklessness is the third category of mens rea.  The term recklessness 
describes the state of mind of the person who, doing an act, is aware of
 a risk that a particular consequence is likely to result.  Awareness of
 a risk is the essence of recklessness.  However, the state of mind is 
also formulated as one of knowledge, foresight or realisation that a 
consequence is likely to result.  The preferred shorthand for 
recklessness is foresight:  the defendant must foresee that a particular
 consequence is likely to result.  See BFW 375.
There is clearly a similarity or overlap between recklessness and 
oblique intention.  Oblique intention is foresight of a particular 
consequence as a moral or virtual certainty.  In other words, the person
 foresees that the particular consequence is very likely to occur.  
Wilful blindness also overlaps with recklessness.  Professor Glanville 
Williams has argued that wilful blindness is really a type of 
recklessness.  He argued that a person can only be wilfully blind to the
 existence of a fact, if he or she is first aware of its likely 
existence.  Individuals can only close their eyes to a fact, if they are
 aware of the risk of that fact existing.
Multiple Meanings of Recklessness
The meaning of recklessness was considered by the High Court in Crabbe 
(1985) 156 CLR 464, BFW 492, BWW 159.  The High Court considered the 
meaning of recklessness in the context of murder at common law.  Murder 
in the Northern Territory was governed at this time by the common law - 
the Northern Territory Criminal Code had not yet been enacted.  The 
defendant was a road train driver.  The defendant was thrown out of a 
motel bar for drunken behaviour.  He returned in the early hours of the 
morning with his prime mover and drove it through the motel bar wall, 
killing 5 people.  The defendant was charged with murder and convicted. 
 The appeal raised the correctness of the trial judge's direction on the
 meaning of recklessness, in particular the precise level of foresight 
required for murder.  The trial judge had directed the jury that the 
defendant would be reckless if he foresees the possibility that his 
conduct may cause death or serious injury.  Under this direction, 
recklessness involves a low level of foresight.
The High Court was unanimous in its judgment.  It is extremely rare for 
the Court to deliver a single judgment.  The Court rejected the view 
which had been expressed in earlier cases that recklessness for murder 
only required defendants to foresee death or serious injury was a 
possible result of their actions.  This broader definition of 
recklessness had been adopted by Stephen J in La Fontaine (1976), BFW 
495, BWW 160.  Where there are no statutory provisions effecting the 
position, the High Court concluded that murder requires the defendant to
 know that death or grievous bodily harm is a probable consequence. So a
 person who foresee death or serious injury as a probable consequence is
 as morally blameworthy as someone who intended to kill.  And on one 
view, may be regarded as having intended those consequence - a reference
 to oblique intention.  But the High Court, demonstrating better sense 
than the House of Lords, refused to be drawn into the oblique intention 
debate.  The High Court in Royall (1991), refer to Course Outline, has 
held that this definition of recklessness should be applied for murder 
under statute, in that case murder under s. 18, Crimes Act 1900 (NSW).  
So recklessness for murder, whether common law or statutory, is 
foresight of probability, not possibility.
In  
Crabbe, the High Court also considered the role of 
indifference in recklessness.  In some statutes, recklessness is 
formulated as "Reckless indifference".  Murder in the s 18 Crimes Act 
1900 (NSW) is an example.  The High Court in Crabbe stressed that under 
the common law definition of recklessness it was not necessary that the 
defendant's knowledge of the probable consequences of his actions be 
accompanied by indifference,
"It is not the offender's indifference to the consequences of his act 
but his knowledge that those consequences will probably occur that is 
the relevant element.":  BWW at 162
The High Court in Crabbe expressly stated that their statements only 
applied where no statute applied.  Notwithstanding this limitation, the 
Federal Court has held that murder under s. 18 of the Crimes Act 1900 
(ACT) should follow the common law position:  Brown (1987) 78 ALR 368.  
The Federal Court held that although the section refers to "reckless 
indifference to human life", it is immaterial whether the defendant was 
indifferent to the risk.  The sole question is whether the defendant at 
the relevant time foresees the probability of causing death.
This approach to indifference in recklessness reflects the criminal 
law's stance on the irrelevance of motive.  Requiring indifference on 
the part of the defendant would be tantamount to regarding motive as 
relevant to liability.  If indifference is not required, as the High 
Court suggests, then how do we protect conduct which involves the high 
risk of harm to others, but is done for a legitimate reason.  In  
Crabbe, the High Court gives the example of the doctor who performs a 
surgical operation which involves the high risk of death to the patient.
  Every day doctors are aware that death or serious injury is a likely 
consequence of medical procedures.  How does the law protect doctors 
from liability under the criminal law when their procedures fail.  There
 are two ways to protect individuals who take risks for legitimate 
reasons.  The first way is to allow them to raise the defence of 
necessity.  Necessity or justification is a complete defence and would 
render the doctor's conduct lawful.  But the onus is on the defendant to
 raise some evidence that the conduct was justified.  This is hinted to 
by the High Court in Crabbe: 
"Academic writers have pointed out that in deciding whether an act is 
justifiable its social purpose or social utility is important:  see, for
 example, Howard's Criminal Law (4th ed, 1982), pp 54-5 and 359-9.  That
 question need not be discussed in the present case where there was no 
possible justification or excuse for the actions of the applicant.  It 
should, however, be made clear that lack of social purpose is not an 
element of the mental  state with which we are here concenred, though it
 may bear on the question whether the act is justifiable".  BFW 162.
The second way is to adopt a narrower definition of reckless by 
requiring the defendant's risk-taking to be unjustifiable.  In the 
present edition of Howards Criminal Law, Professor Fisse proposes that 
recklessness should be defined as substantial and unjustifiable 
risk-taking.  Doctors regularly foresee the risk of harm occurring, but 
as the risk is one which is socially justifiable, the doctors are not 
reckless.  Professor Fisse borrowed this definition of recklessness from
 the American Law Institute Model Penal Code.  See his discussion of 
this definition of recklessness in Howards Criminal Law pp. 62-63 and 
pp. 486-493.  This proposal has been very influential, though the High 
Court in  Crabbe did not go so far as to endorse it:  see above.  
However, the Model Criminal Code for Australia has however incorporated 
Fisse's formulation of recklessness into the general principles section 
of the Code, defining recklessness as substantial and unjustifiable 
risk-taking:  discussed in BFW 375.
In Crabbe, the High Court also considered the role of wilful blindness 
(see above).  Crabbe was decided before Kural and  Pereira, op cit, and 
is the first High Court case critical of the role of wilful blindness in
 the criminal law.  The High Court was critical of the direction used by
 the trial judge with regard to wilful blindness.  The High Court agreed
 with the opinion of Professor Glanville Williams, see BWW 162.  Since 
it is the defendant's knowledge that death or grievous bodily harm is 
the crucial element, the jury should not be confused by reference to 
wilful blindness.
There may be very good reasons why the level of foresight for murder is 
fixed at the level of probability, rather than possibility.  The 
Australian court are concerned to ensure that the law of murder reflects
 distinctions in moral culpability.  The High Court in  Crabbe was 
concerned that punishing the defendant for murder when death or serious 
injury was foreseen as merely possible to occur would spread the scope 
of murder too far.  However, this strict definition of recklessness does
 not apply for less serious offences.  For offences other than murder, 
the courts have not applied the high level of foresight based on 
foresight of probable consequence.  Coleman, BFW 347:  see Assault and 
Sexual Assault.  The case involved the NSW statutory offence of 
maliciously inflicting actual bodily harm with intent to have sexual 
intercourse.  The courts have long held that the term "maliciously" in 
the Crimes Act means intention or recklessness is required.  The 
defendant appealed his conviction on the ground that the trial judge had
 misdirected the jury on recklessness by not applying the Crabbe 
formulation.  The NSW Court of Criminal Appeal held that for all 
statutory offences other the murder, recklessness is defined as 
foresight of possibility not probability, refer to S at p. 61.  So 
offences which are satisfied by recklessness, like malicious wounding 
and rape, only require foresight of possibility.
So it is most important that the trial judge must direct the jury as to 
the meaning of recklessness.  Unlike intention, the courts have gone to 
some lengths to formulate a precise definition of recklessness, using 
formulations of foresight of proable or possible consequences.
For example, see the High Court in the earlier decision 
La Fontaine (1976),
 BWW 163.  In La Fontaine the High Court made two suggestions regarding 
recklessness.  First, that in murder trials the issue of recklessness 
should not be left to the jury unless it arises as a real possibility on
 the facts.  Secondly, the High Court suggested that the term "reckless"
 should not be used in the trial judge's direction to the jury as it is 
liable to confuse.  Rather, the jury should be directed that the 
defendant must foresee that death or serious injury is a probable 
consequence of his or her action.  In BWW, the authors ask  why should 
the judges avoid using the "r" word in front of juries.  I would suggest
 there is a good reason for avoiding a direction to a jury using the 
terms "recklessness".  
In Williams (1990) 50 A Crim R 213, New South Wales Court of Criminal 
Appeal the court adopted a similar approach to the meaning of 
recklessnes for the purpose of assault (see Assault):
"The word reckless is a word well-known in ordinary speech and a person 
is said to be reckless who acts without regard to the possible 
consequences of the act in question.  In most contexts the law gives to 
the word the same meaning that it has in ordinary speech." 
Badgery-Parker J at 222
But the ordinary common-sense use of the term recklessness is much 
broader than its legal use.  Consider the definition of recklessness 
found Macquaries dictionary:  it defines reckless as "utterly careless 
of the consequences; without caution".  Carelessness is an objective not
 a subjective standard.  Without proper guidance on the meaning of 
recklessness a jury would be likely to depart from a subjective 
standard, and in its stead apply an objective standard of negligence.
Caldwell Recklessness Downunder
A word of caution about the meaning of recklessness under English law.  
In the early 80s the English courts also developed a dual meaning for 
recklessness.  However, be warned, recklessness in England does not have
 the same dual meaning which is applied in Australia.  The House of 
Lords in Caldwell [1982] AC 341 established a second objecgive standard 
for recklessness.  This other meaning of recklessness is often described
 in shorthand as Caldwell recklessness.  The case concerned the meaning 
of "recklessly" under the statutory offence of criminal damage.  The 
House of Lords held that in interpreting the word recklessly, the courts
 must apply the ordinary meaning and usage of the word.  The Lords held 
that recklessness has two meaning.  It embraces subjective awareness of a
 risk:  the person who is aware of a risk but ignores it.  But it also 
embraces an objective aspect:  the person who fails to appreciate the 
risk when the risk of its occurrence would obvious to the reasonable 
person.  The Lords concluded that inadvertence to an obvious risk was as
 morally culpable as subjective risk-taking.
The decision caused uproar in the legal community.  However, the 
Caldwell definition of recklessness still applies in England and has 
been extended to other statutory offences like rape and reckless 
driving.  Professor JC Smith and other English academics were extremely 
critical of this departure from subjectivism in mens rea.  Refer to BWW 
121 for articles critical of the decision.  As the authors of BWW point 
out the decision obviously blurs the distinction between recklessness 
and criminal negligence:  "Such an extension renders the line between 
recklessness and negligence very fine indeed".  Caldwell recklessness 
has not been applied in Australia, however there appears to be some 
movement toward a modified standard in the field of sexual offences:  se
 R v Tolmie (1996) 37 NSWLR 660, per Kirby J.
Mistake
The basic point to master is that mistake of fact and intoxication do 
not operate as defences per se.  Where the crime is one of mens rea, 
mistake or intoxication may provide proof that the defendant lacked the 
necessary intent, knowledge or recklessness.  It does not matter that 
the mistake or intoxication came about through the defendant's stupidity
 or carelessness:  if the defendant lacks mens rea, he or she cannot be 
punished. This principle is most clearly articulate in Morgan, BFW 394, 
(see Sexual Offences), where Ld Hailsham held:
"it seems to follow as a matter of inexorable logic that there is no 
room either for a 'defence' of honest belief or mistake, or of a defence
 of honest and reasonable belief or mistake.  Either the prosecution 
proves that the accused had the requisite intent, or it does not.  In 
the former case it succeeds, and in the latter it fails.  Since honest 
belief clearly negatives intent, the reasonableness or otherwise of that
 belief can only be evidence for or against the view that the belief and
 therefore the intent was actually held"
There is a danger that this approach to mens rea entrenches dangerous 
rape myths about female sexuality such as "No means Yes":  see S 
Bronitt, "The Direction of Rape Law in Australia:  Toward A Positive 
Consent Standard" (1994) 18 Criminal Law Journal, Sydney, LBC, 249-253; 
and generally S Bronitt, "Rape and Lack of Consent" (1992) 16 Criminal 
Law Journal, Sydney, LBC, 289-310.
Mistake, Strict Liability and Negligence
For crimes of strict liability (where mens rea is not an element), 
mistake may be raised as a defence provided that it is a reasonable: see
 He Kaw Teh (Mistake and Strict Liability).  Also a where the crime is 
satisfied by proof of criminal negligence (Criminal Negligence), the 
defendant's mistaken belief may suffice for liability.  In the Code 
States, rape is a crime of strict liability, and therefore the defendant
 must establish that the mistaken belief in consent is both honest and 
reasonable in the circumstances.
Intoxication
The first point to make is that in most cases intoxication, through 
either alcohol or drugs, is generally irrelevant to criminal liability. 
 Intoxication is only relevant in the present law when it is so serious 
that it affects voluntariness or prevents the formation of a mental 
element.  Intoxication must be very acute to affect the voluntariness of
 the defendant's action.  In such cases the intoxication must induce a 
state of automatism.  More commonly, intoxication can affect the 
defendant's capacity to form the relevant mens rea.  It may prevent the 
defendant forming the relevant intention, knowledge or recklessness.  
Intoxication is not a defence per se.  It is simply evidence which may a
 raise doubt in the jury's mind as to whether the defendant was acting 
voluntarily or with the relevant mens rea, BFW 405.  Although it is 
misleading to speak of it as a defence, academics and judges persist to 
speak of the defence of intoxication:  see for example, the title to 
Chapter 15 of BWW.
The attitude of the criminal law to intoxication is ambivalent.  One 
view is that intoxication may preclude criminal culpability in certain 
cases.  This view stems from the criminal law's emphasis on 
voluntariness and subjectivity.  Intoxication may affect criminal 
culpability in two ways:  first, it may affect the voluntariness of the 
defendant's actions, and secondly, it may affect the mental state of the
 defendant.  The defendant should not be culpable where the harm arises 
out of involuntariness or where the harm is not intended or foreseen.
The opposing view is that intoxication should be irrelevant where 
defendant made a voluntary decision to get drunk or high on drugs.  To 
allow self-induced intoxication to excuse the defendant overlooks the 
prior fault on the part of the defendant.  There should be culpability 
in such cases because the defendant voluntarily made a choice to put 
himself or herself in a position of irresponsibility endangering the 
health and safety of others:  see for eg, Mason J's dissent in O'Connor 
BFW 418.
The approach of the early common law in England was extremely 
unsympathetic to individuals who committed crimes whilst in a state of 
intoxication.  Until the 19th century evidence of intoxication was 
totally disregarded.  In the early 19th century the courts began to take
 a less harsh approach.  Although generally inadmissible, evidence of 
drunkenness was admissible in exceptional cases, reducing murder to 
manslaughter.  However, the general policy of the common law prevented 
the defendant relying on self-induced intoxication as a defence.  The 
early law reflected the prior fault approach to intoxication.
The House of Lords affirmed this approach in DPP v Majewski [1977] AC 
443.  The facts of this decision are set out at BWW 805.  The defendant 
was involved in a violent brawl in a pub, committing several assault.  
His defence was that because of the alcohol and drugs he had consumed, 
he did not intend to commit the assaults.  The appeal raised the issue 
of self-induced intoxication,.  The House of Lords reviewed the 19th 
century decisions, and drew a distinction between crimes of specific and
 general intent.  In relation to crimes of  specific intent, 
self-induced intoxication could be raised by the defendant.  In relation
 to crimes of general or basic intent self-induced intoxication can 
never give rise to a defence.  The House of Lords held that offences 
like assault and manslaughter were crimes of general intent.  Later 
cases confirmed that murder, wounding, causing grievous bodily harm are 
crimes of specific intent.
Using the distinction between specific and general intention to 
determine the scope of intoxication is unprincipled and illogical.  
Smith and Hogan, the English textbook, conclude that "the distinction is
 based on no principle but on policy".  It is simply a device to limit, 
in the context of some offences, the availability of intoxication.  Lord
 Salmon admitted as much, see BWW 806.  Prof Glanville Williams wrote of
 this law:  "In allocating crimes to one category or the other, the 
courts adopt a Humpty Dumpty attitude" (ie "it means just what I choose 
it to mean  - neither more nor less", from the exchange between Humpty 
and Alice in Through the Looking Glass)
The only convincing rationalisation of the distinction is based on the 
defendant's prior fault in consuming the alcohol or drugs.  Crimes of  
specific intent require proof of intention in the narrow sense of 
purpose.  Crimes of  basic intent are satisfied by either intent or 
recklessness.  For basic intent crimes, it then follows that the 
defendant's recklessness in consuming of the alcohol or the drugs is 
sufficient for culpability of the crime committed subsequently.  So the 
defendant's recklessness at this earlier stage, prevents intoxication 
being raised as a defence.  The problem with this rationalisation is 
that it poses difficulties for the requirement of  concurrence of mens 
rea and actus reus.  The mental state, and subsequent criminal conduct, 
do not occur together.
The Australian courts have avoided the problems of Majewski.  The High 
Court has rejected the prior fault approach to self-induced intoxication
 in O'Connor (1979), BFW 405.  The majority of the High Court held that 
Majewski is not good law in Australia.  The defendant stole a map holder
 and a knife from a car owned by a police officer.  A neighbour observed
 this, and alerted the police officer who gave chase to the defendant.  
During the officer's attempt to arrest the defendant, the defendant 
stabbed the officer with the knife.  He was charged with two offences:  
stealing and wounding with intent to resist arrest.  At trial, the 
defendant gave evidence that he had been taking a hallucinatory drug and
 alcohol.  He had no recollection of the incidents.  The trial judge 
directed the jury according to the rule in Majewski.  The question on 
appeal was whether this approach to intoxication should be followed in 
Australia.
The first point made by Barwick CJ was that it is improper to refer to 
intoxication as a defence, refer to BFW 406.  The second point, made in 
the next paragraph, is that intoxication or drunkenness can vary 
greatly, and intoxication does not in every case affect the 
voluntariness or mental state of the defendant.  In many cases, alcohol 
simply releases the defendant's inhibition to commit crime.  This state 
of intoxication does not affect criminal culpability because the 
defendant is acting voluntarily and with intent.  The third point is 
that it is only a rare case that intoxication affect voluntariness.  
More commonly, it will affect the defendant's mental state, see BFW 407.
The important point in the judgment is that the majority of the High 
Court refused to follow the rule in Majewski.  The Court regarded the 
distinction between specific and  basic intent as unhelpful and 
haphazard.  The Court did refer to the prior fault argument, BFW 411.  
So the defendant's culpability in getting drunk differs from the 
culpability required by the particular crime committed whilst drunk.  
By rejecting Majewski, the High Court rejected the prior fault approach 
to intoxication.  But there remains one important qualification in the 
present law where prior fault is relevant.  The High Court held that 
intoxication is irrelevant where the defendant formed the intent to 
commit the crime and deliberately consumed alcohol or drugs in order to 
pluck up the courage to commit the offence.  This is called Dutch 
Courage.  The majority of the High Court affirmed the English decision 
Gallagher [1963] AC 349.  This point is made by Barwick CJ, and he quote
 from Lord Denning in Gallagher, see discussion of this case by Stephen J
 at BFW 416.  So the common law in Australia, in this exceptional case, 
prevents the defendant from relying on intoxication in their defence.  
In this case, prior fault of the defendant (in the form of the 
defendant's earlier intention to commit the crime) supplies the relevant
 degree of culpability for the subsequent crime.
The traditional approach to intoxication in the criminal law has been 
shaped by concerns about public order and public safety.  Several of the
 Law Lords in Majewski were concerned that a general unrestricted 
intoxication defence would mean that dangerous conduct which causes harm
 would go unpunished.  The Lords were concerned that a general defence 
would open the floodgates, providing many defendants with an avenue for 
an unmeritorious acquittal.  This assumes that a jury would be too eager
 to accept evidence of intoxication affecting voluntariness or mens rea,
 and so acquit the defendant.  The High Court in O'Connor did not share 
this view:  see BFW 412.
The confidence about juries not being to eager to acquit may be due to 
the acknowledgment that the "jury needs careful and special 
instruction":  read Barwick CJ "model direction", BFW 412.  It reflects 
the tension between the strict theory of the law (which suggests that 
intoxication can excuse culpability, by affecting both voluntariness and
 mens rea) and the practical application of the rules by the jury (which
 suggest that intoxication in practice rarely excuses culpability 
because of the defendant's prior fault).
Indeed the empirical data on intoxication suggests that the present law 
does not operate as a Drunk's Charter:  see G Smith, "Footnote to 
O'Connor's Case" (1981) 5 CrimLJ 270.  
Intoxication illustrates the tension between the importance of 
subjectivity and broader considerations of public policy.  The 
dissatisfaction with the present approach to individuals who commit 
crimes whilst impaired through intoxication has led to calls for reform.
  The proposals for reform are outlined in BWW at p. 828-829.  The 
Butler Committee in England made certain recommendations for reform, 
including the creation of a new offence of dangerous intoxication.  Such
 an approach was even foreshadowed by Barwick CJ in O'Connor BFW 411.  
In 1993 the English Law Commission published a Consultation Paper on 
Intoxication and Criminal Liability.  The Law Commission recommended 
that Majewski should be abolished by statute and that intoxication 
should be relevant to the issue of whether the defendant's conduct was 
voluntary and accompanied by the relevant mens rea.  However, like 
Butler the Commission recommended that Parliament to protect the 
community from dangerously intoxicated persons should create a special 
offence of causing harm whilst intoxicated.
Intoxication, strict liability and negligence
Is intoxication relevant to crimes which no do require mens rea?  There 
are many statutory offences which do not require the prosecution to 
prove a mental state on the part of the defendant:  these are called 
crimes of strict and absolute liability.  Where the defendant commits 
such a crime in a state of intoxication, the defendant cannot argue that
 intoxication prevented the formation of mens rea, because mens rea is 
not an element of the strict and absolute liability offences.  
Intoxication is however relevant to voluntariness.  Strict or absolute 
liability offences are satisfied by proof that the defendant completed 
the actus reus of the offence.  So, in extreme cases, intoxication may 
affect the voluntariness of the defendant's conduct.  In other words, 
automatism can be raised as a defence for strict and absolute liability 
offence.
The second question is whether intoxication is relevant to crimes 
satisfied by criminal negligence, like manslaughter.  Criminal 
negligence punishes the defendant for what he or she ought to have done 
and ought to have foreseen.  Unlike crimes of mens rea, the culpability 
is objectively determined by reference to what the reasonable 
hypothetical person would have done and foreseen placed in the defendant
 position.  The courts point out that the reasonable person is both 
prudent and sober.  So there is little scope of intoxication to affect 
culpability in crimes of criminal negligence.  However, offences 
satisfied by criminal negligence are still subject to the voluntariness 
requirement.  So the defendant's extreme intoxication may lay the basis 
for a defence of automatism.
Criminal Negligence and Strict Liability 
The Model Criminal Code for Australia, in its final report on General 
Principles, identified possible four fault elements for criminal 
offences:  intention, knowledge, recklessness and negligence.  The 
Committee who drafted the Code stated that the fault elements are set 
out in descending order of culpability.  So intention is the most 
serious fault element and negligence is the least serious.  This is now 
contained in the Criminal Code Act 1995 (Cth), s 5.4.
This hierarchy of fault for crimes reflects the traditional model of 
criminal culpability.  The general position in the common law is that 
serious offences require proof of mens rea:  intention, knowledge or 
recklessness.  Exceptionally, negligence may suffice for culpability.  
However, it does not follow that all serious crimes must have mens rea. 
 Some crimes which are satisfied by negligence can be very serious:  
manslaughter is the prime example.  In the criminal law objective fault 
standards, like negligence, are considered controversial because they 
depart from norm of mens rea.
Criminal negligence can be contrasted with the three mens rea states.  
Unlike intention, knowledge or recklessness, criminal negligence is not 
concerned with the defendant's actual state of mind.  Rather culpability
 is determined objectively, by referring to what the reasonable person 
in the position of the defendant would have done and known.  So the 
magistrate or the jury will be judging the defendant's conduct according
 to the standards of the hypothetical reasonable person.  Why does the 
criminal law permit the objective standard of criminal negligence to 
pollute the subjective standards?  The simple answer is that in some 
cases the defendant failure to do something that could have been done 
can be as morally culpable as the person who acts with intention, 
knowledge or recklessness.
The standard of criminal negligence
Because of the general reluctance to use objective standards in the 
criminal context, the courts have developed a narrower meaning for 
negligence.  You may remember from your tort law, that negligence is any
 departure, however slight, from the standard of care expected from a 
reasonable person.  In the criminal law, the courts have developed a 
stricter definition for negligence.
In the 19th Century, the English courts attempted to draw a definition 
of negligence which was stricter than the civil standard.  In the 
English decision Andrews v DPP (1937) the House of Lords reviewed these 
19th century authorities:  BFW 424; BWW 296.  These authorities adopted 
circular definitions which confused negligence with mens rea, refer to 
Cashill v Wright (1856) BWW 297.  But Lord Atkin in Andrews went onto 
criticise these definitions of criminal negligence as circular and 
unhelpful:  see quotes in Taktak, BFW 544.  He emphasised that a very 
high degree of negligence was required:  BWW 297.  Lord Atkin concluded 
that the term recklessness most nearly covers the case.  However, the 
problem with Atkin's definition of criminal negligence is that it 
confuses negligence with recklessness.  Following the High Court's 
decision in  Crabbe it is clear that recklessness in Australia today is a
 purely subjective concept.  So Atkin's definition is not very 
instructive.
The status of Andrews in Australia was considered in the Victorian 
decision Nydam (1977), BFW 520, BWW 300.  This decision should be 
regarded as the leading authority in Australia on the meaning of 
negligence for criminal law purposes.  The defendant threw petrol over 
two women, and ignited it.  He claimed that he only intended to take his
 own life.  The trial judge directed the jury as to both as to murder, 
and also manslaughter by criminal negligence.  He was convicted of 
murder.  On appeal the Supreme Court of Victoria considered the trial 
judge's direction on the meaning of criminal negligence for 
manslaughter.  The Supreme Court of Victoria refused to endorse the 
subjective definition of criminal negligence used in DPP v Andrews.  The
 Supreme Court found that the weight of authority favoured an objective 
test rather than a subjective test.  The Court then considered the 
formulation for this objective test.  Before outlining the standard 
developed in Nydam, you must be cautioned about the unconventional use 
of the term "mens rea" in Nydam:  BFW 522, BWW 304, last paragraph.  The
 Court says that manslaughter is a crime of mens rea.  This is 
misleading because manslaughter does not require the death to be 
accompanied by intention, knowledge or recklessness.  The Court is using
 mens rea in a limited and qualified sense.  The Court is applying mens 
rea to the defendant's intention to do the acts which constitute the 
crime, rather a mental attitude towards the particular consequence 
specified by the offence.  The problem is that all action must be 
"intentional" in the sense of being voluntary.  To require intentional 
action is simply to require voluntary action.  Voluntariness ought not 
to be regarded as an aspect of mens rea.  So understand that criminal 
negligence does not require mens rea in the conventional sense that the 
defendant must intend, knowledge or foresee an particular consequence 
specified by the offence.
The Supreme Court then goes onto describe criminal negligence for 
manslaughter requires "the doing an act in circumstances involving a 
great falling short of the standard of care required of a reasonable man
 in the circumstances and a high degree of risk or likelihood of the 
occurrence of death or serious bodily harm if that standard of care was 
not observed".
So criminal negligence has two components.  
The first aspect is that the defendant's conduct must involve a great 
falling short of the standard of care required of a reasonable person.
The second aspect is that the reasonable person, in the position of the 
accused, would have foreseen the risk of the particular consequence 
occurring.
The last component of the definition also refer to the requirement that 
the defendant's behaviour must involve such a falling short and such a 
risk so as to warrant criminal punishment.  This is inherently circular.
  You cannot define an element of a crime by saying X is criminal when X
 is sufficient to justify punishment.  So this aspect of the definition 
of criminal negligence must be treated with some scepticism.  Perhaps 
the point the court is trying to make is that the standard of negligence
 in the criminal law is different from that applied in tort law.
There is one major problem with using objective standards in the 
criminal law.  The problem is one which bedevils objective standards in 
law generally.  Who is the "reasonable man", or as it is now known, the 
"reasonable person"?  The reasonable person standard assumes a community
 consensus about what constitutes reasonable and unreasonable conduct.  
By using this hypothetical person to judge the defendant's conduct, the 
law is ignoring important characteristics like race and gender.  The 
standard is in fact highly discretionary because magistrates or juries  
will be constructing the standard of judgment according to their own 
values.  Because the standard is objective and neutral it is given a 
veneer of legitimacy:  see S Bronitt and K Amirthalingam, "Cultural 
Blindness and the Criminal Law" (1996) 20(2) Alternative Law Journal, 
Melbourne, 58-64.
Even if we accept that magistrates or juries can agree upon the type of 
"reasonable person" they will use, the objective standard poses severe 
problems for those people who are unable to reach the standards of the 
reasonable person because of some inherent physical and intellectual 
weakness, see BFW 423.  In Stone and Dobinson (Omissions) where one 
defendant was half-blind, and the other defendant was of low 
intelligence.  They had both unsuccessfully tried to care for a 
bed-ridden relative, and eventually the relative died.  The law report 
noted that the defendants could not even use the telephone.  Both 
defendants were charged with manslaughter by criminal negligence.  The 
House of Lords statements about criminal negligence should be read with 
caution because they follow the approach in Andrew, and confuse criminal
 negligence with recklessness.  However, the facts show that an 
objective standard can operate harshly against defendants who have some 
physical or intellectual weakness.  There are two questions for the 
jury.  First whether their conduct involved a great falling short of the
 standard of care required of a reasonable person, and secondly whether 
the reasonable person, in the position of the defendants, would have 
appreciated the risk of death or injury.  Both elements would have been 
satisfied in Stone.  
The Victorian Law Reform Commission in 1990 in its review of Homicide 
was critical of the outcome in Stone.  The Commission pointed out the 
unfairness of criminal negligence for people who could not reasonably be
 expected to reach the standard of the reasonable person.  To avoid this
 unfairness, the Commission proposed a special defence for this category
 of person.  Any person charged with manslaughter by criminal negligence
 would have a defence if by reason of some physical or mental infirmity 
he or she cannot reach the standard of expected from ordinary persons.  
The defence has not yet been enacted.
Strict and Absolute Liability
Crimes of strict and absolute liability have two distinctive feature.  
First, strict and absolute liability offences are creatures of statute: 
they are statutory offence.  Secondly, these offences, like offences 
satisfied by criminal negligence, depart from the paradigm of mens rea. 
 Strict and absolute liability offences do not require the prosecution 
to prove any subjective mental state or fault element on the part of the
 defendant.  The prosecution only has to prove the actus reus of the 
crime was completed by the defendant.  In the textbooks these types of 
offences are marginalised to the periphery of the criminal law, 
described as exceptional and regulatory in nature.  However, the truth 
is that in terms of numbers of offences, the majority of crimes do not 
require proof of mens rea.
The law's preference for mens rea manifests itself in a reluctance to 
dispose of the mens rea requirement too readily for statutory offence . 
 In the 19th Century, in the face of a growing number of statutory 
crimes not requiring mens rea, the courts developed a presumption in 
favour of mens rea.  The High Court has affirmed this rebuttable 
presumption in He Kaw Teh, BFW 352, BWW 859.
There will be cases where Parliament has expressly or impliedly excluded
 mens rea from a statutory crime.  However, the courts are still uneasy 
about punishment of actus reus alone.  Indeed the courts have allowed 
the defendant's state of mind to be raised by way of a defence - the 
defence of honest and reasonable mistake of fact.  So although the 
prosecution need not prove mens rea, the defendant can raise a mistaken 
belief that the conduct is innocent as a defence.  The law imposes a 
requirement that the mistake must be reasonable, and a mistake which is 
one of fact not law.  Statutory crimes which do not require mens rea but
 allow the mistake defence are called strict liability offence.
He Kaw Teh considers when this defence of mistake will operate (Mistake 
and Strict Liability).  At this point it is important to know that there
 will be some statutory offences which do not require mens rea and do 
not allow the defendant to raise his mistake as a defence.  Where the 
mistake defence is not available, this type of statutory offence is 
called an absolute liability offence.
To sum up, what the difference between strict and absolute liability 
offences?  The difference between strict and absolute liability offences
 relates to the availability of the defence of mistake of fact.  Where 
it is available liability is strict, where it is not available liability
 is absolute.