Everything we call real is made of things that cannot be regarded as real.

No, no, you're not thinking; you're just being logical.

It is, indeed, perhaps the greatest prospect of humanistic studies to contribute through an increasing knowledge of the history of cultural development to that gradual removal of prejudices which is the common aim of all science.

If you have a correct statement, then the opposite of a correct statement is of course an incorrect statement, a wrong statement. But when you have a deep truth, then the opposite of a deep truth may again be a deep truth.

If you think you understand it, that only shows that you don't know the first thing about it.

If you aren't confused by quantum mechanics, you haven't really understood it.

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.