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.

A fact is like a sack which won't stand up if it's empty. In order that it may stand up, one has to put into it the reason and sentiment which caused it to exist.

None of us can estimate what we do when we do it from instinct.

It is much easier to be a hero than a gentleman.

Refusing to have an opinion is a way of having one, isn't it?

When you say you are in love with humanity, you are well satisfied with yourself.

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.