That a person cannot and consequently will not defend himself, does not yet cast disgrace upon him in our eyes ; but we despise the person who has neither the ability nor the good will for revenge whether it be a man or a woman.

Phlegmatic natures can be inspired to enthusiasm only by being made into fanatics.

Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.

Marriage: that I call the will of two to create the one who is more than those who created it.

Man is no longer an artist, he has become a work of art.

Man is the cruelest animal.

When our brain feels too weak to deal with our opponent's objections, our heart answers by casting suspicion on their underlying motives.