Feynman, Richard

"Doubt and discussion are essential for progress."

"Life is a simple thing. You do what you can, you do what you have to."

"You do not really understand something unless you can explain it to your grandmother."

"The first way of thinking is not teaching the truth, it is the attitude that nothing is true."

"I wonder what's inside a star."

"If you set up the problem right it will solve itself."

"There are 10^80 atoms in the universe and you have to know the position and velocity of each one."

"I notice that people are not grateful."

"I love questions. I like to ask questions. I don't like to answer them."

"You cannot blame me because I am just doing this as a game."

"For comfort and efficiency, our stores are arranged so that the best things are always hardest to find."

"It is the tension between creativity and skepticism that has produced the stunning and unexpected findings of science."

"We cannot change what we are, only what we become."

"The ability to observe without judging is the highest form of intelligence."

"I want to solve a problem that I think is important."

"I would like to leave my children with curiosity."

"There is nothing in biology yet found that indicates the inevitability of death."

"It is impossible to live without failing at something."

"I have just three things to teach: simplicity, patience, and compassion."

"We tend to think science works to solve problems."

"The moment you have in your heart this extraordinary thing called love and feel the depth, the ecstasy of it, you will discover that for you the world is transformed."

"What I gave up was the feeling of certainty. It was important not to have to believe anything - to be able to question."

"Time is relative; its only worth depends upon what we do as we pass through it."

"I've got nothing to do today but whatever I want."

"The principle of science is that the truth must be based on a thing being reproducible."

"I believe that a scientist looking at nonscientific problems is just as dumb as anyone else."

"There's plenty of room at the bottom."

"Different people see different things - that is a phenomenon. But what we really want is to know something about the world itself."

"The paradox is only a conflict between reality and your feeling of what reality ought to be."

"What do you care what other people think?"