Religions die when they are proved to be true. Science is the record of dead religions.

In one dancing saloon I saw the only rational method of art criticism I have ever come across. Over the piano was printed a notice: 'Please do not shoot the pianist. He is doing his best.'

Do not be afraid of the past. If people tell you that it is irrevocable, do not believe them. The past, the present and the future are but one moment in the sight of God, in whose sight we should try to live. Time and space, succession and extension, are merely accidental conditions of thought. The imagination can transcend them.

Every effect that one produces gives one an enemy. To be popular one must be a mediocrity.

Anybody can make history; only a great man can write it.

I usually say what I really think. A great mistake nowadays. It makes one so liable to be misunderstood.

Man is a rational animal who always loses his temper when he is called upon to act in accordance with the dictates of reason.