However, it might be thought that these anatomical characteristics, though not dangerous in themselves, are nevertheless an indication of a tendency on their part to act like savages. But this is not the case; these characteristics “are morphological accidents that are purely local and are compatible with the most fortunate conformation.” But this is not saying that every peculiarity must remain unutilized. Thus, for example, there are persons who are able to move their ears. “If murder and theft were acts as little complicated, and of as little importance as moving the ears, and if these acts, having become criminal, did not suppose very complex anatomical and psychological coördinations; if there were, in other words, as Gall supposed, cerebral organs specially and innately fitted for murder and theft, we could believe that the mere atavistic presence of these organs would constitute a tendency to commit these crimes; but neither anatomo-physiological analysis, nor psychology will justify today so simple a conception.” [167] And then it has not been proved that murder and theft were habitual with our ancestors; they had recourse to them only under stress of circumstances, quite like any normal man of today. Considered from an anatomical point of view our means of injuring our fellows have decreased; on the other hand we have now other means at our disposal (firearms, etc.). “As to the need of pleasure and of life, this can only have increased, and never can cupidity have been more aroused than in our civilized society. Never have the temptations to appropriate the goods of others been stronger and more frequent. Civilization tends to develop wants and appetites, whence there comes this colossal extension of the means of repression and of coercion employed to make criminal attempts dangerous, in order that crime may not be too easy a means of acquiring fortune. Except for purely pathological cases, the criminal is moved by his wants, by wants that have nothing extraordinary about them; when a man has an interest, or thinks he has an interest in committing a crime, he brings into play muscular and cerebral aptitudes which every normal man possesses, the same elementary aptitudes as those he might have made use of, under other circumstances, to pursue and punish a criminal.” [168] Some biological facts are to be explained by atavism; their explanation nevertheless remains mysterious. But atavism loses all its importance as a means of explanation as soon as we know how to explain a fact by actually existing causes, as is the case with crime. “We should understand that it would be a question of atavistic tendencies if assassins killed for the sole pleasure of killing, if thieves stole for the pleasure of stealing. Now we know well that theft and murder are only means, and that their use is called ‘work’ by professional criminals. If they prefer this kind of work it is because it is quicker and less painful than regular work.” [169]