But how can we venture to reprove or praise the universe! Let us beware of attributing to it heartlessness and unreason or their opposites: it is neither perfect nor beautiful nor noble, and has no desire to become any of these; it is by no means striving to imitate mankind! It is quite impervious to all our aesthetic and moral judgements! It has likewise no impulse to self-preservation or impulses of any kind; neither doe sit know any laws. Let us beware of saying there are laws in nature. There are only necessities: there is no one to command, no one to obey, no one to transgress...

J. In the following few days Nietzsche sent short writings—known as the Wahnbriefe ("Madness Letters")—to a number of friends (including Cosima Wagner and Jacob Burckhardt). Now with the new style of Zarathustra his work became even more alienating and the market received it only to the degree required by politeness.

Nietzsche's key ideas include the "death of God" the Übermensch the eternal recurrence the Apollonian and Dionysian dichotomy perspectivism and the will to power. His sister Elisabeth Förster-Nietzsche acted as curator and editor of Nietzsche's manuscripts during his illness. [citation needed].