Note 3 — Chapter II · MARRIAGE AND HEREDITY

Unless and until humanity is able and willing to apply its intelligence to purposive racial improvement, by discouragement of the procreation of the less fit, and by encouragement of the procreation of the more fit—by an application, that is to say, of the principle of negative or restrictive eugenics, on the one hand, and the principle of positive or constructive eugenics, on the other.—Translator’s Note.