"[T]hough anthropometry owes an immense debt to Quetelet, we must be careful not to follow his principles and methods blindfold. We must recollect that Quetelet lived in pre-Darwinian times, at a date when the fixity of races was an established scientific belief. His central principle consequently was that the mean man is the perfect man. The theory of evolution now assures us of what common sense never doubted---that this principle is radically wrong. The most desirable man is not the one who is mediocre in his wits, in his honesty, and in his aspirations; or, again, in the proportions of his figure, in his muscular power, and in his ability to endure fatigue. Anthropologists, as a rule, are behindhand in their studies of men of superior types, who rank above the mediocrity of their race in every respect, and are not to be confounded with those who rank above the majority in only a few conspicuous ways, through the sacrifice of other qualities which are no less essential, but of a less showy kind."