Some things are so serious, they can only be joked about.

A deep truth is a truth so deep that not only is it true but it's exact opposite is also true.

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

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

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.

Oh what idiots we have all been, this is just as it must be

Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.