I am affected, not because you have deceived me, but because I can no longer believe in you.

For the purpose of knowledge we must know how to make use of the inward current which draws us towards a thing, and also of the current which after a time draws us away from it.

You may have enemies whom you hate, but not enemies whom you despise. You must be proud of your enemy: then the success of your enemy shall be your success too.

If you stare into the Abyss long enough the Abyss stares back at you.

One thing a man must have: either a naturally light disposition or a disposition lightened by art and knowledge.

Nothing on earth consumes a man more quickly than the passion of resentment.

It is obvious that all sense has gone out of modern marriage; which is, however, no objection to marriage but to modernity.