Philosophy of science is about as useful to scientists as ornithology is to birds. — Richard P. Feynman
There is no learning without having to pose a question. And a question requires doubt. — Richard P. Feynman
If you think you understand quantum mechanics, you don’t understand quantum mechanics. — Richard P. Feynman
If all of mathematics disappeared, physics would be set back by exactly one week. — Richard P. Feynman