No scientist thinks in formulae.

People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion.

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

What good is a reputation not put to good use.

I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.

It's not that I'm so smart, it's just that I stay with problems longer.