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The scale of light can be described by numbers — called the frequency — and as the numbers get higher, the light goes from red to blue to ultraviolet. We can't see ultraviolet light, but it can affect photographic plates. It's still light — only the number is different.

— Richard Feynman QED: The Strange Theory of Light and Matter (1985)

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More quotes by Richard Feynman

I don't know anything, but I do know that everything is interesting if you go into it deeply enough.

The Pleasure of Finding Things Out (1999)

The first principle is that you must not fool yourself — and you are the easiest person to fool.

I learned very early the difference between knowing the name of something and knowing something.

What Do You Care What Other People Think? (1988)

Hell, if I could explain it to the average person, it wouldn't have been worth the Nobel prize.

statement (1965)

Tell your son to stop trying to fill your head with science — for to fill your heart with love is enough!

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Attribution

Quote text and notes from Wikiquote: Richard Feynman (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.