Whoever wants to be a judge of human nature should study people's excuses.

If language had been the creation not of poetry but of logic, we should only have one.

Religion is the highest vanity.

If you hate something thoroughly without knowing why, you can be sure there is something of it in your own nature.

Reason is the substance of the universe. The design of the world is absolutely rational.

It's incredible how much intelligence is used in this world to prove nonsense.

That Man, who flees from truth, should have invented the mirror is the greatest of historical miracles.