Any one who has read the preceding chapters will have no doubt that such a belief is incompatible with an understanding of the principles of biology. How, then, has it come to be such an integral part of socialism? Apparently it is because the socialist movement is, on the whole, made up of those who are economically unsatisfied and discontented. Some of the intellectual leaders of the movement are far from inferior, but they too often find it necessary to share the views of their following, in order to retain this following. A group which feels itself inferior will naturally fall into an attitude of equalitarianism, whereas a group which felt itself superior to the rest of society would not be likely to. Before criticising the socialistic attitude in detail, we will consider some of the criticisms which some socialists make of eugenics. 1. It is charged that eugenics infringes on the freedom of the individual. This charge (really that of the individualists more than of socialists strictly speaking) is based mainly on a misconception of what eugenics attempts to do. Coercive measures have little place in modern eugenics, despite the gibes of the comic press. We propose little or no interference with the freedom of the normal individual to follow his own inclinations in regard to marriage or parenthood; we regard indirect measures and the education of public opinion as the main practicable methods of procedure. Such coercive measures as we indorse are limited to grossly defective individuals, to whom the doctrine of personal liberty can not be applied without stultifying it. It is indeed unfortunate that there are a few sincere advocates of eugenics who adhered to the idea of a wholesale surgical campaign. A few reformers have told the public for several years of the desirability of sterilizing the supposed 10,000,000 defectives at the bottom of the American population. Lately one campaigner has raised this figure to 15,000,000. Such fantastic proposals are properly resented by socialists and nearly every one else, but they are invariably associated in the public mind with the conception of eugenics, in spite of the fact that 99 out of 100 eugenists would repudiate them. The authors can speak only for themselves, in declaring that eugenics will not be promoted by coercive means except in a limited class of pathological cases; but they are confident that other geneticists, with a very few exceptions, hold the same attitude. There is no danger that this surgical campaign will ever attain formidable proportions, and the socialist, we believe, may rest assured that the progress of eugenics is not likely to infringe unwarrantably on the principle of individual freedom, either by sterilization or by coercive mating.