The gospel to me is simply irresistible.

Montaigne is wrong in declaring that custom ought to be followed simply because it is custom, and not because it is reasonable or just.

We have an idea of truth, invincible to all scepticism.

Mutual cheating is the foundation of society.

If magistrates had true justice, and if physicians had the true art of healing, they would have no occasion for square caps; the majesty of these sciences would itself be venerable enough.

Chess is the gymnasium of the mind.

Let man then contemplate the whole of nature in her full and grand majesty... No idea approaches it. We may enlarge our conceptions beyond all imaginable space; we only produce atoms in comparison with the reality of things. It is an infinite sphere, the center of which is everywhere, the circumference nowhere.