"If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it t…"

"The fundamental error of all systems of morality is that they are not based on observation."

"The price of glory is the loss of leisure."

"Just remember, once you're over the hill you begin to pick up speed."

"Women are directly adapted to act as the nurses and educators of our childhood, for the simple reason that they are themselves childish, frivolous and short-sighted; in a word, are big children all th…"