The strongest have their moments of fatigue.

As regards the celebrated struggle for life, it seems to me for the present to have been rather asserted than proved. It does occur, but as the exception; the general aspect of life is not hunger and distress, but rather wealth, luxury, even absurd prodigality -- where there is a struggle it is a struggle for power.

All truth is crooked, time itself is a circle

Our destiny rules over us, even when we are not yet aware of it; it is the future that makes laws for our today.

You have not yet suffered enough! For you suffer only from yourselves, you have not yet suffered from man.

An attack on the roots of passion means an attack on the roots of life.

Truth will have no gods before it.- The belief in truth begins with the doubt of all truths in which one has previously believed.