"The greatest problem of our time is how to put men in touch with the world."

"The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd; indeed in view of the silliness of the majority of mankind, a widely spread belief is more likely t…"

"I should not hold it desirable that either a man or a woman should enter upon the serious business of a marriage intended to lead to children without having had previous sexual experience."

"I would rather be a man of paradoxes than a man of prejudices."

"Nothing can penetrate the loneliness of the human heart except the highest intensity of the sort of love the religious teachers have preached."