“Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. THAT'S relativity.”
“If we knew what it was we were doing, it would not be called research, would it?”
“I don't know, I don't care, and it doesn't make any difference!”
"If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut."
"I never think of the future. It comes soon enough."
"Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."
“You have to learn the rules of the game. And then you have to play better than anyone else.”
“I am a deeply religious nonbeliever - This is a somewhat new kind of religion”
“Any man who reads too much and uses his own brain too little falls into lazy habits of thinking”
"Gravitation is not responsible for people falling in love."
“The only thing that interferes with my learning is my education.”