The frankest and freest product of the human mind and heart is a love letter; the writer gets his limitless freedom of statement and expression from his sense that no stranger is going to see what he is writing.

The institution of royalty in any form is an insult to the human race.

Prediction is difficult- particularly when it involves the future.

I am a democrat only on principle, not by instinct, nobody is that. Doubtless some people say they are, but this world is grievously given to lying.

I am quite sure now that often, very often, in matters concerning religion and politics a man's reasoning powers are not above the monkey's.

The unexamined life may not be worth living, but the life too closely examined may not be lived at all.

If you send a damned fool to St. Louis, and you don't tell them he's a damned fool, they'll never find out.