For a good notation has a subtlety and suggestiveness which at times make it seem almost like a live teacher.

All serious innovation is only rendered possible by some accident enabling unpopular persons to survive.

Into every tidy scheme for arranging the pattern of human life, it is necessary to inject a certain dose of anarchism.

There is something feeble, and a little contemptible, about a man who cannot face the perils of life without the help of comfortable myths. Almost inevitably some part of him is aware that they are myths and that he believes them only because they are comforting. But he dare not face this thought, and he therefore cannot carry his own reflection to any logical conclusion.

When all experts agree, you need to watch out.

Science is what we know, and philosophy is what we don't know.

A good man will never suspect his friends of shady actions: this is part of his goodness. A good man will never be suspected by the public of using his goodness to screen villains: this is part of his utility