“It doesn't matter how beautiful your theory is, it doesn't matter how ...” — Richard P. Feynman Quote

“It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.”

“We do not know where to look, or what to look for, when something is memorized. We do not know what it means, or what change there is in the nervous system, when a fact is learned. This is a very important problem which has not been solved at all.”

“If I could explain it to the average person, it wouldn't have been worth the Nobel Prize.”

“Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it.”

“First figure out why you want the students to learn the subject and what you want them to know, and the method will result more or less by common sense.”

“There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them!”

“Dire .. que l'homme est constitué de certains éléments chimiques est une description ne convenant qu'à ceux dont l'intention est de l'utiliser comme engrais.”

“A man ceases to be a beginner in any given science and becomes a master in that science when he has learned that he is going to be a beginner all his life.”

“By The Time I'm Finished (Sonnet 2601)”

“What is especially striking and remarkable is that in fundamental physics a beautiful or elegant theory is more likely to be right than a theory that is inelegant.”

“Throughout 150 years of the science of bacteriology, there is no evidence that one species of bacteria has changed into another... Since there is no evidence for species changes between the simplest forms of unicellular life, it is not surprising that there is no evidence for evolution from prokaryotic [i.e., bacterial] to eukaryotic [i.e., plant and animal] cells, let alone throughout the whole array of higher multicellular organisms.”