A narrow mind and a wide mouth usually go together.

Physics has never been a comfortable subject for human psychology. The desire to regard everything outside the human race's purview as insignificant, and everything within that purview as firmly under the control of tribal myth and custom, is as strong today as it was in the time of Galileo.

Most of the research which is done is determined by the requirement that it shall, in a fairly obvious and predictable way, reinforce the approved or fashionable theories.

A narrow mind and a wide mouth usually go together.

The only important thing to realise about history is that it all took place in the last five minutes.

Lack of clarity is always a sign of dishonesty.

The way to do research is to attack the facts at the point of greatest astonishment.