All in all, punishment hardens and renders people more insensible; it concentrates; it increases the feeling of estrangement; it strengthens the power of resistance.

I'm not upset that you lied to me, I'm upset that from now on I can't believe you.

One will seldom go wrong if one attributes extreme actions to vanity, average ones to habit, and pretty ones to fear.

The inclination to self-depreciation, to freely accepting being robbed, being duped, and being swindled, could be the modesty of a god among men.

The great epochs of our life come when we gain the courage to rechristen our evil as what is best in us.

Morality is the herd-instinct in the individual.

In certain pious people I have found a hatred of reason, and have been favourably disposed to them for it: their bad intellectual conscience was at least exposed by that!