For the moment I have sufficiently replied to the anti-socialist objection, since I have shown not merely that the disproportion between the number of births and the number of those who survive tends to constantly diminish, but also that the "struggle for existence" itself changes in its essence and grows milder in its processes at each successive phase of the biological and social evolution. Socialism may then insist that human conditions of existence ought to be guaranteed to all men--in exchange for labor furnished to collective society--without thereby contradicting the Darwinian law of the survival of the victors in the struggle for existence, since this Darwinian law ought to be understood and applied in each of its varying manifestations, in harmony with the law of human progress. Socialism, scientifically understood, does not deny, and cannot deny, that among mankind there are always some "losers" in the struggle for existence. This question is more directly connected with the relations which exist between _socialism_ and _criminality_, since those who contend that the struggle for existence is a law which does not apply to human society, declare, accordingly, that _crime_ (an abnormal and anti-social form of the struggle for life, just as _labor_ is its normal and social form) is destined to disappear. Likewise they think they discover a certain contradiction between socialism and the teachings of criminal anthropology concerning the congenital criminal, though these teachings are also deducted from Darwinism.[15] I reserve this question for fuller treatment elsewhere. Here is in brief my thought as a socialist and as a criminal anthropologist. In the first place the school of scientific criminologists deal with life as it now is--and undeniably it has the merit of having applied the methods of experimental science to the study of criminal phenomena, of having shown the hypocritical absurdity of modern penal systems based on the notion of free-will and moral delinquency and resulting in the system of cellular confinement, one of the mental aberrations of the nineteenth century, as I have elsewhere qualified it. In its stead the criminologists wish to substitute the simple segregation of individuals who are not fitted for social life on account of pathological conditions, congenital or acquired, permanent or transitory. In the second place, to contend that socialism will cause the disappearance of all forms of crime is to act upon the impulse of a generous sentiment, but the contention is not supported by a rigorously scientific observation of the facts.