Every man to whom salvation is offered has an inalienable natural right to say 'No, thank you: I prefer to retain my full moral responsibility: it is not good for me to be able to load a scapegoat with my sins: I should be less careful how I committed them if I knew they would cost me nothing.

We are more gullible and superstitious today than we were in the Middle Ages, and an example of modern credulity is the widespread belief that the Earth is round. The average man can advance not a single reason for thinking that the Earth is round. He merely swallows this theory because there is something about it that appeals to the twentieth century mentality.

No man fully capable of his own language ever masters another.

I tell you that as long as I can conceive something better than myself I cannot be easy unless I am striving to bring it into existence or clearing the way for it.

The theory that music has a depraving effect on morals has now been abandoned to the old women of both sexes.

All autobiographies are lies. I do not mean unconscious, unintentional lies: I mean deliberate lies.

Activity is the only road to knowledge.