... mental degeneracy in the offspring, either to moral defect, or to intellectual deficiency, or to outbursts of positive insanity." And the same author says elsewhere: "The anti-social, egoistic development of the individual predisposes to, if it does not predetermine, the mental degeneracy of his progeny; he, alien from his kind by excessive egoisms, determines an alienation of mind in them. If I may trust in that matter my observations, I know no one who is more likely to breed insanity in his offspring than the intensely narrow, self-sensitive, ... — Practical Ethics • William DeWitt Hyde
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