Note 2 — PART I MAN’S SUPREME INHERITANCE

It should, however, be clearly understood in this connection that certain laws of natural selection must, so far as we can see, always hold good; and it would not be advisable to alter them even if it were possible. For example, that curious law may be cited which ordains the attraction of opposites in mating and so maintains nature’s average. The attraction which a certain type of woman has for a certain type of man, and vice versa is, in my opinion, a fundamental law, and any attempt to regulate it would be harmful to the race. This, however, is no argument against the regulation of prevention of marriages between the physically and mentally unfit.