After this beginning the Italian school put forth another explanation, to which it attached the more importance as the hypothesis of atavism fell into discredit: the criminal is either an epileptic or morally insane. Although the correctness of this hypothesis has not been proved any more than the other,[584] the Italian school here found itself in a field recognized by criminal-anthropologists as its true one. At present one has even the right to say that the opinion in this regard is almost unanimous.[585] The origin of the tendencies of part of the criminals is to be found in the pathological nature of the individuals themselves.[586] These are disordered or degenerate, not, as some authors would have us believe, individuals differing more or less from the average, but persons who suffer from mental diseases, or whose nervous system is affected.[587]
Among those disordered and degenerate, some individuals[588] have tendencies not found in others (such as the desire to kill for the sake of killing), or their moral sentiments are excessively weak. It is to be noticed that we have met with degeneracy above, as it is to be named among the causes of alcoholism and prostitution also. In treating of economic crimes we saw that degenerates also run more danger than others of succumbing in the struggle for existence, and hence become criminals more easily. Thus we meet degeneracy both as a direct and as an indirect cause of crime. [[659]]
We might leave the matter here, for we have come to a field other than that of sociology. However, one more question presents itself. To what extent are the economic system and its consequences the cause of these maladies? It is plain that this important question belongs in a work on sociology. We shall accordingly attempt to answer it briefly with the aid of competent authorities.
First of all, we note that heredity plays a great part in these maladies. The authors who have taken up the subject agree. It has been remarked that:
First, the inheritance of defects is not inevitable; degenerate parents may have sound children, though the chances are not very great.
Second, the disease of the parents is not always transmitted as such to the child, but the child may be predisposed to this same disease or one analogous. Dr. Féré expresses this as follows: “The diseases of the nervous system … make up a single family, indissolubly united by the laws of heredity … everyone (of those who have these diseases), if he is still fertile, can reproduce them all.”[589]
In speaking of heredity we come to the first relation between the diseases in question and the social environment, since, in our present society, human reproduction is intimately bound up with the economic life. A person who is diseased but rich is often in a position to marry and procreate, while he would have had a smaller chance if sexual selection alone had been effective. On the other hand many well and strong individuals are prevented at present from establishing a family, since they lack the means to support it.
A second harmful kind of selection in our present society is found in the effect of militarism, which takes the strongest individuals, decimates them in time of war, or returns them to society weakened and diseased, while the weak have the greater chance to procreate.
In the third place, the ignorance of the harmful effects for humanity of the reproduction of degenerates is one of the principal reasons why degeneracy is so frequently present. This ignorance is great in the well-to-do classes, and naturally greater still among the poor. It is often repeated, and with truth, that man takes great care to improve his live stock by selection but takes none whatever in the matter of his own race; the weak and the diseased continue to reproduce themselves to the detriment of all society. The lack of all feeling of responsibility, natural to our intensely individualistic society, also [[660]]contributes its share toward bringing to birth so many unhappy creatures for whom it would have been better if they had never existed.
If we ask how it happens that one individual or another is degenerate, we must answer that very often this degeneracy is due to heredity, either in part or altogether. But if we enquire into the causes of degeneracy in general heredity ceases to be a cause. As Professor Dallemagne says: “Heredity creates nothing; from heredity to heredity we must still go back to the cause.”[590]