Renormalization is just a stop-gap procedure. There must be some fundamental change in our ideas, probably a change just as fundamental as the passage from Bohr's orbit theory to quantum mechanics. When you get a number turning out to be infinite which ought to be finite, you should admit that there is something wrong with your equations, and not hope that you can get a good theory just by doctoring up that number.

I do not see how a man can work on the frontiers of physics and write poetry at the same time. They are in opposition.

God used beautiful mathematics in creating the world.

Hopes are always accompanied by fears, and, in scientific research, the fears are liable to become dominant.

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

Pick a flower on Earth and you move the farthest star.

The research worker, in his efforts to express the fundamental laws of Nature in mathematical form, should strive mainly for mathematical beauty. He should take simplicity into consideration in a subordinate way to beauty ... It often happens that the requirements of simplicity and beauty are the same, but where they clash, the latter must take precedence.