Opposites are not contradictory but complementary.

The opposite of love is apathy, and hate is really the same as love. If you're so consumed by hatred for someone, you might as well be loving them, because you're thinking about them for the same amount of time.

Two sorts of truth: trivialities, where opposites are obviously absurd, and profound truths, recognized by the fact that the opposite is also a profound truth.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

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

The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.