642 Quotes by Richard P. Feynman

I’m going to play with physics, whenever I want to, without worrying about any importance whatsoever.

Religion gives inspiration to act well. Not only that, it gives inspiration to the arts and to many other activities of human beings.

In its efforts to learn as much as possible about nature, modern physics has found that certain things can never be “known” with certainty. Much of our knowledge must always remain uncertain. The most we can know is in terms of probabilities.

Some people think Wheeler’s gotten crazy in his later years, but he’s always been crazy.

The scale of light can be described by numbers called the frequency and as the numbers get higher, the light goes from red to blue to ultraviolet. We can’t see ultraviolet light, but it can affect photographic plates. It’s still light only the number is different.

It’s amazing how many people even today use a computer to do something you can do with a pencil and paper in less time.

From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell’s discovery of the laws of electrodynamics. The American Civil War will pale into provincial insignificance in comparison with this important scientific event of the same decade.

If a guy tells me the probability of failure is 1 in 100,000, I know he’s full of crap.

By honest I don’t mean that you only tell what’s true. But you make clear the entire situation. You make clear all the information that is required for somebody else who is intelligent to make up their mind.