Blind yourself, for I am blind.

Logic is one thing, the human animal another. You can quite easily propose a logical solution to something and at the same time hope in your heart of hearts it won't work out.

Personally, I don't give a rap for documents; for the truth in my eyes is not in them but in the mind.

Whatever is a reality today, whatever you touch and believe in and that seems real for you today, is going to be - like the reality of yesterday - an illusion tomorrow.

Man never reasons so much and becomes so introspective as when he suffers; since he is anxious to get at the cause of his sufferings, to learn who has produced them, and whether it is just or unjust that he should have to bear them.

If only we could see in advance all the harm that can come from the good we think we are doing.

We all have a world of things inside ourselves and each one of us has his own private world. How can we understand each other if the words I use have the sense and the value that I expect them to have, but whoever is listening to me inevitably thinks that those same words have a different sense and value, because of the private world he has inside himself, too.