I have argued flying saucers with lots of people. I was interested in possible. They do not appreciate that the problem is not to demonstrate whether it's possible or not but whether it's going on or not.

You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like they expect me to be. It's their mistake, not my failing.

While I am describing to you how Nature works, you won't understand why Nature works that way. But you see, nobody understands that.

Religion is a culture of faith; science is a culture of doubt.

To decide upon the answer is not scientific. In order to make progress, one must leave the door to the unknown ajar ajar only.

Ordinarily it would take me about fifteen minutes to get a hallucination going," wrote Feynman, "but on a few occasions, when I smoked some marijuana beforehand, it came very quickly.

What I can't create I don't understand