The Zoroaster of the book is a sage who lives remote from mankind, and with no attendants but a snake and an eagle. The book is in four parts and all are made up of discourses by Zoroaster. These discourses are delivered to various audiences during the prophet's occasional wanderings and at the conferences he holds with various disciples in the cave that he calls home. They are decidedly oriental in form and recall the manner and phraseology of the biblical rhapsodists. Toward the end Nietzsche throws all restraint to the winds and indulges to his heart's content in the rare and exhilarating sport of blasphemy. There is a sort of parody of the last supper and Zoroaster's backsliding disciples engage in the grotesque and indecent worship of a jackass. Wagner and other enemies of the author appear, thinly veiled, as ridiculous buffoons.
In his discourses Zoroaster voices the Nietzschean idea of the superman—the idea that has come to be associated with Nietzsche more than any other. Later on, it will be set forth in detail. For the present, suffice it to say that it is the natural child of the notions put forward in Nietzsche's first book, "The Birth of Tragedy," and that it binds his entire life work together into one consistent, harmonious whole. The first part of "Also sprach Zarathustra" was published in 1883, the second part following in the same year, and the third part was printed in 1884. The last part was privately circulated among the author's friends in 1885, but was not given to the public until 1892, when the entire work was printed in one volume. As showing Nietzsche's wandering life, it may be recorded that the book was conceived in the Engadine and written in Genoa, Sils Maria, Nice and Mentone.
"Jenseits von Gut und Böse" ("Beyond Good and Evil") appeared in 1886. In this book Nietzsche elaborated and systematized his criticism of morals, and undertook to show why he considered modern civilization degrading. Here he finally formulated his definitions of master-morality and slave-morality, and showed how Christianity was necessarily the idea of a race oppressed and helpless, and eager to escape the lash of its masters.
"Zur Genealogie der Moral" ("The Genealogy of Morals"), which appeared in 1887, developed these propositions still further. In it there was also a partial return to Nietzsche's earlier manner, with its merciless analysis of moral concepts. In 1888 Nietzsche published a most vitriolic attack upon Wagner, under the title of "Der Fall Wagner" ("The Case of Wagner"), the burden of which was the author's discovery that the composer, starting, with him, from Schopenhauer's premises, had ended, not with the superman, but with the Man on the cross. "Götzendämmerung" ("The Twilight of the Idols") a sort of parody of Wagner's "Götterdämmerung" ("The Twilight of the Gods") followed in 1889. "Nietzsche contra Wagner" ("Nietzsche versus Wagner") was printed the same year. It was made up of extracts from the philosopher's early works, and was designed to prove that, contrary to the allegations of his enemies, he had not veered completely about in his attitude toward Wagner.
Meanwhile, despite the fact that his health was fast declining and he was approaching the verge of insanity, Nietzsche made plans for a great four volume work that was to sum up his philosophy and stand forever as his magnum opus. The four volumes, as he planned them, were to bear the following titles:
1. "Der Antichrist: Versuch einer Kritik des Christenthums" ("The Anti-Christ: an Attempt at a Criticism of Christianity").
2. "Der freie Geist: Kritik der Philosophie als einer nihilistischen Bewegung" ("The Free Spirit: a Criticism of Philosophy as a Nihilistic Movement").
3. "Der Immoralist: Kritik der verhängnissvollsten Art von Unwissenheit, der Moral" ("The Immoralist: a Criticism of That Fatal Species of Ignorance, Morality").
4. "Dionysus, Philosophie der ewigen Wiederkunft" ("Dionysus, the Philosophy of Eternal Recurrence").
This work was to be published under the general title of "Der Wille zur Macht: Versuch einer Umwerthung aller Werthe" ("The Will to Power: an Attempt at a Transvaluation of all Values"), but Nietzsche got no further than the first book, "Der Antichrist" and a mass of rough notes for the others. "Der Antichrist" probably the most brilliant piece of writing that Germany had seen in half a century, was written at great speed between September 3rd and September 30th, 1888, but it was not published until 1895, six years after the philosopher had laid down his work forever.