It is not shameful for a man to succumb to pain and it is shameful to succumb to pleasure.

What are our natural principles but principles of custom?

Let us now speak according to natural lights. If there is a God, He is infinitely incomprehensible. . . . We are then incapable of knowing of either what He is or if He is. . . .

What can be seen on earth points to neither the total absence nor the obvious presence of divinity, but to the presence of a hidden God. Everything bears this mark.

Our true dignity consists — in thought. Thence we must derive our elevation, not from space or duration. Let us endeavor then to think well; this is the principle of morals.

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

When intuition and logic agree, you are always right.