Don't forget that few people are likely to tell more than a small part of the truth: no one tells much of the truth, let alone the whole truth. Spoken words are facts in themselves, whether true or false. When people talk they reveal themselves, whether they're lying or telling the truth.

It's an old saying that one still has to know something, despite everything.

Like all great rationalists you believed in things that were twice as incredible as theology.

Of all the creatures that man kills for his amusement there is only one that he kills out of hatred—other men. Man hates nothing as much as himself. That is why war is called the leprosy of the human soul.

It's a useful habit to never believe more than half of what people tell you, and not to concern yourself with the rest. Rather keep your mind free and your path your own.

No one is so busy that he hasn't the time to dismantle a work of art.

What you have stolen can never be yours.