Writers ought to be regarded as wrongdoers who deserve to be acquitted or pardoned only in the rarest cases: that would be a way to keep books from getting out of hand.

You're going to women? Don't forget your whip!

Freedom of opinion is like health; both are individual, and no good general conception can be set up of either of them.

Whatever does not kill me makes me stronger.

We have to be careful that in throwing out the devil, we don't throw out the best part of ourselves.

Truth is the kind of error without which a certain species of life could not live. The value for life is ultimately decisive.

When one does away with oneself one does the most estimable thing possible: one thereby almost deserves to live.