Science must begin with myths, and with the criticism of myths.

You cannot have a rational discussion with a man who prefers shooting you to being convinced by you.

No number of sightings of white swans can prove the theory that all swans are white. The sighting of just one black one may disprove it.

We do not know. We can only guess.

Plato felt that a complete reconstruction of society's political program was needed.

The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error.

Science may be described as the art of systematic over-simplification.