The greater intellect one has, the more originality one finds in men. Ordinary persons find no difference between men.

Our nature lies in movement; complete calm is death.

I rather live as if God exists to find out that He doesn't than live as if he doesn't exist to find out He does.

The eternal silence of these infinite spaces frightens me.

Il n'est pas certain que tout soit incertain. (Translation: It is not certain that everything is uncertain.)

If you believe in God you are at no disadvantage in this life, and at considerable advantage in the next. If you do not believe, but find in the next that there was a next, you are most unfortunate!

For after all what is man in nature? A nothing in relation to infinity, all in relation to nothing, a central point between nothing and all and infinitely far from understanding either. The ends of things and their beginnings are impregnably concealed from him in an impenetrable secret. He is equally incapable of seeing the nothingness out of which he was drawn and the infinite in which he is engulfed.