Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Quantum electrodynamics
Attributed, often cited in discussions of his approach to science.
Unknown
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"Oh. That's interesting. (This entire scene is very typical of Dirac. In fact, that is comparatively a lot of words for him to have said to a stranger.)"
Humorous"People would often think I'm a faker, but I'm usually honest, in a certain way- in such a way that often nobody believes me!"
Humorous"If you think you understand quantum mechanics, you don't understand quantum mechanics."
Strange & Unusual"The easiest way to fool yourself is to believe something because you want it to be true."
Shocking"Yeah, I took the door."
Humorous