Who said “Humans are amphibians -- half spirit and half animal. As spirits they belong to the…”?

“The end of the human race will be that it will eventually die of civilization.”

“The Goddamn human race deserves itself, and as far as I'm concerned it can have it.”

“One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man.”

“No man really knows about other human beings. The best he can do is to suppose that they are like himself.”

“Man is more interesting than men. God made him and not them in his image. Each one is more precious than all.”

“All that is not eternal is eternally out of date.”

“Aim at heaven, and you will get earth thrown in; aim at earth, and you will get neither.”

“There is, hidden or flaunted, a sword between the sexes till an entire marriage reconciles them.”

“God cannot give us a happiness and peace apart from Himself, because it is not there. There is no such thing.”

“Can a mortal ask questions which God finds unanswerable? Quite easily, I should think. All nonsense questions are unanswerable.”

“Courage is not simply one of the virtues but the form of every virtue at the testing point, which means at the point of highest reality.”