And yet these reasons, which are really no reasons at all, are the only ones, so far as I know, that have ever been offered for this absurd and brutal doctrine.
The idea suggested, that " the age of discretion" determines the guilt of a person, that there is a particular age, prior to which all persons alike should be held incapable of knowing any crime, and subsequent to which all persons alike should be held capable of knowing all crimes, is another of this most ridiculous nest of ideas. All mankind acquire their knowledge of crimes, as they do of other things, gradually. Some they learn at an early age; others not till a later one. One individual acquires a knowledge of crimes, as he does of arithmetic, at an earlier age than others do. And to apply the same presumption to all, on the ground of age alone, is not only gross injustice, but gross folly. A universal presumption might, with nearly or quite as much reason, be founded upon weight, or height, as upon age. [1]
This doctrine, that "ignorance of the law excuses no one," is constantly repeated in the form that "every one is bound to know the law." The doctrine is true in civil matters, especially in contracts, so far as this: that no man, who has the ordinary capacity to make reasonable contracts, can escape the consequences of his own agreement, on the ground that he did not know the law applicable to it. When a man makes a contract, he gives the other party rights; and he must of necessity judge for himself, and take his own risk, as to what those rights are, otherwise the contract would not be binding, and men could not make contracts that would convey rights to each other. Besides, the capacity to make reasonable contracts,
implies and includes a capacity to form a reasonable judgment as to the law applicable to them. But in criminal matters, where the question is one of punishment, or not; where no second party has acquired any right to have the crime punished, unless it were committed with criminal intent, (but only to have it compensated for by damages in a civil suit,") and when the criminal intent is the only moral justification for the punishment, the principle does not apply, and a man is bound to know the law only as well as he reasonably may. The criminal law requires neither impossibilities nor extraordinaries of any one. It requires only thoughtfulness and a good conscience. It requires only that a man fairly and properly use the judgment he possesses, and the means he has of learning his duty. It requires of him only the same care to know his duty in regard to the law, that he is morally bound to use in other matters of equal importance. And this care it does require of him. Any ignorance of the law, therefore, that is unnecessary, or that arises from indifference or disregard of one's duty, is no excuse. An accused person, therefore, may be rightfully held responsible for such a knowledge of the law as is common to men in general, having no greater natural capacities than himself, and no greater opportunities for learning the law. And he can rightfully be held to no greater knowledge of the law than this. To hold him responsible for a greater knowledge of the law than is common to mankind, when other things are equal, would be gross injustice and cruelty. The mass of mankind can give but little of their attention to acquiring a knowledge of the law. Their other duties in life forbid it. Of course, they cannot investigate abstruse or difficult questions. All that can rightfully be required of each of them, then, is that he exercise such a candid and conscientious judgment as it is common formankind generally to exercise in such matters. If he have done this, it would be monstrous to punish him criminally for his errors; errors not of conscience, but only of judgment. It would also be contrary to the first principles of a free government (that is, a government formed by voluntary association) to punish men in such cases, because it would be absurd to suppose that any man would voluntarily assist to establish or support a government that would punish himself for acts which he himself did not know to be crimes. But a man may reasonably unite with his fellow-men to maintain a government to punish those acts which he himself considers criminal, and may reasonably acquiesce in his own liability to be punished for such acts. As those are the only grounds on which any one can be supposed to render any voluntary support to a government, it follows that a government formed by voluntary association, and of course having no powers except such as all the associates have consented that it may have, can have no power to punish a man for acts which he did not himself know to be criminal.
The safety of society, which is the only object of the criminal law, requires only that those acts which are understood by mankind at large to be intrinsically criminal, should he punished as crimes. The remaining few (if there are any) may safely be left to go unpunished. Nor does the safety of society require that any individuals, other than those who have sufficient mental capacity to understand that their acts are criminal, should be criminally punished. All others may safely be left to their liability, under the civil law, to compensate for their unintentional wrongs.
The only real object of this absurd and atrocious doctrine, that "ignorance of the law (that is, of crime) excuses no one," and that "everyone is bound to know the criminal law," (that is, bound to know what is a crime,) is to maintain an entirely arbitrary authority on the part of the government, and to deny to the people all right to judge for themselves what their own rights and liberties are. In other words, the whole object of the doctrine is to deny to the people themselves all right to judge what statutes and other acts of the government are consistent or inconsistent with their own rights and liberties; and thus to reduce the people to the condition of mere slaves to a despotic power, such as the people themselves would never have voluntarily established, and the justice of whose laws the people themselves cannot understand.
Under the true trial by jury all tyranny of this kind would be abolished. A jury would not only judge what acts were really criminal, but they would judge of the mental capacity of an accused person, and of his opportunities for understand- ing the true character of his conduct. In short, they would judge of his moral intent from all the circumstances of the case, and acquit him, if they had any reasonable doubt that he knew that he was committing a crime. [2]
[1] This presumption, founded upon age alone, is as absurd in civil matters as in criminal. What can be more entirely ludicrous than the idea that all men (not manifestly imbecile) become mentally competent to make all contracts whatsoever on the day they become twenty-one years of age? and that, previous to that day, no man becomes competent to make any contract whatever, except for the present supply of the most obvious wants of nature? In reason, a man's legal competency to make binding contracts, in any and every case whatever, depends wholly upon his mental capacity to make reasonable contracts in each particular case. It of course requires more capacity to make a reasonable contract in some cases than in others. It requires, for example, more capacity to make a reasonable contract in the purchase of a large estate, than in the purchase of a pair of shoes. But the mental capacity to make a reasonable contract, in any particular case, is, in reason, the only legal criterion of the legal competency to make a binding contract in that case. The age, whether more or less than twenty-one years, is of no legal consequence whatever, except that it is entitled to some consideration as evidence of capacity.
It may be mentioned, in this connection, that the rules that prevail, that every man is entitled to freedom from parental authority at twenty-one years of age, and no one before that age, are of the same class of absurdities with those that have been mentioned. The only ground on which a parent is ever entitled to exercise authority over his child, is that the child is incapable of taking reasonable care of himself. The child would be entitled to his freedom from his birth, if he were at that time capable of taking reasonable care of himself. Some become capable of taking care of themselves at an earlier age than others. And whenever any one becomes capable of taking reasonable care of himself, and not until then, he is entitled to his freedom, be his age more or less.
These principles would prevail under the true trial by jury, the jury being the judges of the capacity of every individual whose capacity should be called in question.