The special theory of relativity owes its origins to Maxwell's equations of the electromagnetic field.

This is a question too difficult for a mathematician. It should be asked of a philosopher"(when asked about completing his income tax form)

In quitting this strange world he has once again preceded me by a little. That doesn't mean anything. For those of us who believe in physics, this separation between past, present, and future is only an illusion, however tenacious.

I asked myself childish questions and proceeded to answer them.

We can't solve today's problems with the mentality that created them.

Violence sometimes may have cleared away obstructions quickly, but it never has proved itself creative.

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.