An answer is always on the stretch of road that is behind you. Only a question can point the way forward.

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.

A lot of people experience the world with the same incredulity as when a magician pulls a rabbit out of a hat.…We know that the world is not all sleight of hand and deception because we are in it, we are part of it. Actually we are the white rabbit being pulled out of the hat. The only difference beween us and the white rabbit is that the rabbit does not realize it is taking part in a magic trick.

You might say that the very best that can happen is to have energetic opponents.

To wonder about life is not something we learn; it is something we forget.

And although I have seen nothing but black crows in my life, it doesn't mean that there's no such thing as a white crow. Both for a philosopher and for a scientist it can be important not to reject the possibility of finding a white crow. You might almost say that hunting for 'the white crow' is science's principal task.

To prove religious faith by human reason is rationalistic claptrap.