If you have any talent, or any occupation that delights you, do it, and do it to the hilt. Don't ask why, or what difficulties you may get into.

I'm smart enough to know that I'm dumb.

The unanswerable mysteries... the attitude that all is uncertain... to summarize it - the humility of the intellect.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts.

The exception tests the rule.

If I say [electrons] behave like particles I give the wrong impression; also if I say they behave like waves. They behave in their own inimitable way, which technically could be called a quantum mechanical way. They behave in a way that is like nothing that you have seen before.