The first amazing fact about gravitation is that the ratio of inertial mass to gravitational mass is constant wherever we have checked it. The second amazing thing about gravitation is how weak it is.

The situation in the sciences is this: A concept or an idea which cannot be measured or cannot be referred directly to experiment may or may not be useful. It need not exist in a theory.

We seem gradually to be groping toward an understanding of the world of subatomic particles, but we really do not know how far we have yet to go in this task.

I don't understand what it's all about or what's worth what, but if the people in the Swedish Academy decide that x, y or z wins the Nobel Prize, then so be it.

Investigating the forces that hold the nuclear particles together was a long task.

The ideas associated with the problems of the development of science, as far as I can see by looking around me, are not of the kind that everyone appreciates.

There were several possible solutions of the difficulty of classical electrodynamics, any one of which might serve as a good starting point to the solution of the difficulties of quantum electrodynamics.

"Only praise behavior that you want to be repeated. Never use false praise."

"In Japanese and Italian, the response to ["How are you?"] is "I'm fine, and you?" In German it's answered with a sigh and a slight pause, followed by "Not so good."

"As the Spanish proverb says, ''He who would bring home the wealth of the Indies, must carry the wealth of the Indies with him.'' So it is in travelling; a man must carry knowledge with him, if he would bring home knowledge."

"What provokes your risibility, Sir? Have I said anything that you understand? Then I ask pardon of the rest of the company."

"I have always said, the first Whig was the Devil"

"You walk on corpses, beauty, undismayed."

"One derives great moral strength from a cup of coffee," I said."

"There is no stillness like the quiet of the first cold nights in the fall."

"You, that are going to be married, think things can never be done too fast: but we that are old, and know what we are about, must elope methodically, madam."

"Every increased possession loads us with a new weariness."

"Lawsuit: A machine which you go into as a pig and come out of as a sausage."

"Corporation: An ingenious device for obtaining profit without individual responsibility."

"I don't exactly know what it means to be ready. A cake when the oven timer goes off? Am I fully baked, or only half-baked?"

"I got a picture [tattoo] of Mohammed Ali on my side with one of his quotes. That's my guy. I look up to him. I'm like his number one fan."

"I kind of knew Cleveland was going to get the No. 1 pick. I think they rigged it. No, don't quote me on that."

"If we are merely matter intricately assembled, is this really demeaning? If there's nothing here but atoms, does that make us less or does that make matter more?"

"It is said that men may not be the dreams of the god, but rather that the gods are the dreams of men."