You can never know if a person forgives you when you wrong them. Therefore it is existentially important to you. It is a question you are intensely concerned with. Neither can you know whether a person loves you. It’s something you just have to believe or hope. But these things are more important to you than the fact that the sum of the angles in a triangle is 180 degrees. You don't think about the law of cause and effect or about modes of perception when you are in the middle of your first kiss.

Over the entrance to the temple at Delphi was a famous inscription: KNOW THYSELF! It reminded visitors that man must never believe himself to be more than mortal - and that no man can escape his destiny.

When you realize there is something you don't understand, then you're generally on the right path to understanding all kinds of things.

It's not a silly question if you can't answer it.

The universe is a great mystery.

When we look up at the sky, we are trying to find the way to ourselves.

Perhaps the clock hands had become so tired of going in the same direction year after year that they had suddenly begun to go the opposite way instead.