“Those ferocious instincts which seem the return of another world, in brawls or in times of revolution, are not returning at all, because they have never disappeared. During a certain time they do not manifest themselves in the individual or the family, because there is no need that they should; or possibly they manifest themselves in ways less dangerous, in connection with ordinary circumstances and relatively favorable to tranquillity. But let there arise any need, no matter what, of a “mobilization of the offensive and defensive forces”, then the mobilization takes place, and the most civilized man appears under the form of the dangerous animal he has never ceased to be, happily for himself and his species. This man whom you take for an atavistic throw-back, appears such to you only because you have failed to recognize in their mild form, in yourself and in others, the fundamental brutality and egoism of the human species. Notwithstanding the civilizing influences in the midst of which you have lived, notwithstanding the peaceable habits that you have contracted, and all the horror with which you are inspired by the contrary habits of which you fear to fall the victim, it is enough that you should be worked upon rather strongly by a combination of annoying circumstances, that even you should become a dangerous individual. When we wish to study crime as anthropologists or as psychologists, we must not be afraid to look the truth in the face, and it is important to clear our minds beforehand, as far as possible, of the illusions of self-love, and of deceptive conventions.” [171] Then Professor Manouvrier criticises in a manner as just as it is witty, the hypothesis of the “delinquent man.” He demonstrates that, according to the method of the New School, a work could be written upon the “hunting man” also, full of scientific observations upon his argot, his boasting, etc., etc., upon all sorts of signs, in short, which go to show that a taste for hunting is an atavistic phenomenon. The explanation of crime by atavism is no more true than this other, for both can be explained by the environment. If we hold absolutely to the expression: “born-criminal”, every man is one, just as every dog is a born-swimmer. Every dog knows how to swim very well, but this does not prevent a number of dogs from never swimming, since ordinarily there are more convenient ways of crossing the water. In the same way every man is a born-criminal, but most men refrain from becoming actual criminals, since that course is more advantageous to them than the other.