What embitters the world is not excess of criticism, but absence of self-criticism.

The word 'good' has many meanings. For example, if a man were to shoot his grandmother at a range of five hundred yards, I should call him a good shot, but not necessarily a good man.

The power which makes a man able to entertain a good impulse is the same as that which enables him to make a good gun; it is imagination.

No man knows he is young while he is young.

Angels can fly because they take themselves lightly.

Ingratitude is surely the chief of the intellectual sins of man. He takes his political benefits for granted, just as he takes the skies and the seasons for granted.

Silver is sometimes more valuable than gold, that is, in large quantities.