A physical law must possess mathematical beauty.

Just by studying mathematics we can hope to make a guess at the kind of mathematics that will come into the physics of the future... If someone can hit on the right lines along which to make this development, it may lead to a future advance in which people will first discover the equations and then, after examining them, gradually learn how to apply them... My own belief is that this is a more likely line of progress than trying to guess at physical pictures.

The methods of theoretical physics should be applicable to all those branches of thought in which the essential features are expressible with numbers.

Living is worthwhile if one can contribute in some small way to this endless chain of progress.

Quantum mechanics has explained all of chemistry and most of physics.

If there is a God, he's a great mathematician.

In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it is the exact opposite.