What is much more astonishing than crime is the fact that workmen labor courageously and patiently for ten or twelve hours a day, and notwithstanding this lead only a miserable life. The reason is that they have known nothing but labor since infancy and have always had to be content with very simple amusements. It goes without saying that one man is more moved to commit crimes than another, although the conditions under which they are living are the same, just as an athlete will use violence quicker than a weakling. But this is no reason to declare strength a factor of crime, since it serves for useful acts as well. Acts which are contrary to the proper working of society are, therefore, called abnormal and those are called normal that are in harmony with it. But it is not therefore permissible to transfer this distinction to the field of biology, and call the criminal abnormal. “Aptitudes that are very normal physiologically, may be employed for acts that are equally normal physiologically, but which, from a social point of view are classed as abnormal, because contrary to the social prosperity. Yet this is an abuse of the word ‘abnormal’, because society as at present constituted is, in its normal functioning, consistent with innumerable causes of conflict between its own interests and those of individuals. And just as the annoying consequences of our mistakes often make us recognize the truth, so crimes very often serve to indicate to societies the reforms they ought to bring about in order to perfect themselves. “Every individual has wants to satisfy, wants primordial or secondary, that may become infinitely complicated and clothed in forms as much more various as the environment becomes more complex. Now it happens in every society, and especially in very civilized societies, that the different individuals do not find the same facilities, and further, do not possess the same means of action. There is an evident disproportion between the existing needs and the milder means of satisfying them; whence the struggle for existence and well-being.