Paternity is based anyhow only upon conviction: I am convinced, therefore, I am the father.

That we understand something perfectly, that we accomplish something better than anyone else around us, that is what matters.

The aim of living is life itself.

Animals, we have been told, are taught by their organs. Yes, I would add, and so are men, but men have this further advantage that they can also teach their organs in return.

The world is full of contradiction.

None are more hopelessly enslaved than those who falsely believe they are free.

Reasonable men are the best dictionaries of conversation.