It does not make any difference how beautiful your guess is. It does not make any difference how smart you are, who made the guess, or what his name ….

The Quantum Universe has a quotation from me in every chapter - but it's a damn good book anyway..

People are always asking for the latest developments in the unification of this theory with that theory, and they don't give us a chance to tell them….

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

Teach principles not formulas..

Nature's imagination far surpasses our own..

You can’t say A is made of B or vice versa. All mass is interaction..

In those days, in Far Rockaway, there was a youth center for Jewish kids at the temple.... Somebody nominated me for president of the youth center. T….

A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don….

Experiment is the sole judge of the validity of any idea..

I think I can safely say that nobody understands Quantum Mechanics..

People may come along and argue philosophically that they like one better than another; but we have learned from much experience that all philosophic….

I'm trying to find out NOT how Nature could be, but how Nature IS..

What is necessary for 'the very existence of science,' and what the characteristics of nature are, are not to be determined by pompous preconditions,….

Some things that satisfy the rules of algebra can be interesting to mathematicians even though they don't always represent a real situation..

What I can't create I don't understand.

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….

You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird..….

Science is what we have learned about how to keep from fooling ourselves..

I'd hate to die twice. It's so boring..

But see that the imagination of nature is far, far greater than the imagination of man..