“God is dead. God remains dead. And we have killed him.”

The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.

A casual stroll through the lunatic asylum shows that faith does not prove anything.

It is not a lack of love, but a lack of friendship that makes unhappy marriages.

We have art in order not to die of the truth.

He who fights with monsters should look to it that he himself does not become a monster.

And if you gaze for long into an abyss, the abyss gazes also into you.

No one can construct for you the bridge upon which precisely you must cross the stream of life, no one but you yourself alone.

There are no facts, only interpretations.