"Nothing in life is to be feared. It is only to be understood."

"Every great advance in science has issued from a new audacity of imagination."

"Cells let us walk, talk, think, make love and realize the bath water is cold."

"Each problem that I solved became a rule, which served afterwards to solve other problems."

"I assert that the cosmic religious experience is the strongest and the noblest driving force behind scientific research."

"That's the nature of research - you don't know what in hell you're doing."

"No amount of experimentation can ever prove me right; a single experiment can prove me wrong."

"Bad times have a scientific value. These are occasions a good learner would not miss."

"There is no wealth but life."

"Life has meaning only if one barters it day by day for something other than itself."