Extremes are for us as though they were not, and we are not within their notice. They escape us, or we them. This is our true state; this is what makes us incapable of certain knowledge and of absolute ignorance... This is our natural condition, and yet most contrary to our inclination; we burn with desire to find solid ground and an ultimate sure foundation whereon to build a tower reaching to the Infinite. But our whole groundwork cracks, and the earth opens to abysses.

Few friendships would survive if each one knew what his friend says of him behind his back.

Let us weigh the gain and the loss, in wagering that God is. Consider these alternatives: if you win, you win all, if you lose you lose nothing. Do not hesitate, then, to wager that he is.

I know whom I have believed.

Reason commands us far more imperiously than a master; for in disobeying the one we are unfortunate, and in disobeying the other we are fools.

All human evil comes from a single cause, man's inability to sit still in a room.

Thought makes the whole dignity of man; therefore endeavor to think well, that is the only morality.