We may never achieve the goal of having every pregnancy end with the birth of a healthy, normal child, but certainly a vast majority of the 17,000 st… - Margaret Sanger

It is said a fish as large as a man has a brain no larger than the kernel of an almond. In all fish and reptiles where there is no great brain development, there is also no conscious sexual control. The lower down in the scale of human development we go the less sexual control we find. It is said that the aboriginal Australian, the lowest known species of the human family, just a step higher than the chimpanzee in brain development, has so little sexual control that police authority alone prevents him from obtaining sexual satisfaction on the streets. According to one writer, the rapist has just enough brain development to raise him above the animal, but like the animal, when in heat knows no law except nature which impels him to procreate whatever the result. Every normal man and Woman has the power to control and direct his sexual impulse. Men and women who have it in control and constantly use their brain cells in thinking deeply, are never sensual.

All of our problems are the result of overbreeding among the working class, and if morality is to mean anything at all to us, we must regard all the changes which tend toward the uplift and survival of the human race as moral.

The trouble with any effort of trying to divide humanity into the "fit" and the "unfit," is that we do not want, as H. G. Wells recently pointed out, to breed for uniformity but for variety. "We want statesmen and poets and musicians and philosophers and strong men and delicate men and brave men. The qualities of one would be the weaknesses of the other." We want, most of all, genius.
Proscription on Galtonian lines would tend to eliminate many of the great geniuses of the world who were not only "Bohemian," but actually and pathologically abnormal—men like Rousseau, Dostoevsky, Chopin, Poe, Schumann, Nietzsche, Comte, Guy de Maupassant,—and how many others? But such considerations should not lead us into error of concluding that such men were geniuses merely because they were pathological specimens, and that the only way to produce a genius is to breed disease and defect. It only emphasizes the dangers of external standards of "fit" and "unfit."
These limitations are more strikingly shown in the types of so-called "eugenic" legislation passed or proposed by certain enthusiasts. Regulation, compulsion and prohibitions affected and enacted by political bodies are the surest methods of driving the whole problem under-ground. As Havelock Ellis has pointed out, the absurdity and even hopelessness of effecting Eugenic improvement by placing on the statute books prohibitions of legal matrimony to certain classes of people, reveal the weakness of those Eugenists who minimize or undervalue the importance of environment as a determining factor. They affirm that heredity is everything and environment nothing, yet forget that it is precisely those who are most universally subject to bad environment who procreate most copiously, most recklessly and most disastrously.