Also sprach Zarathustra or Thus Spake Zarathustra (Illustrated)

Thus Spoke Zarathustra was conceived while Nietzsche was writing The Gay Science; he made a small note, reading "6,000 feet beyond man and time," as evidence of this. More specifically, this note related to the concept of the eternal recurrence, which is, by Nietzsche's admission, the central idea of Zarathustra; this idea occurred to him by a "pyramidal block of stone" on the shores of Lake Silvaplana in the Upper Engadine, a high alpine region whose valley floor is at 6,000 ft. Nietzsche planned to write the book in three parts over several years. He wrote that the ideas for Zarathustra first came to him while walking on two roads surrounding Rapallo, according to Elisabeth Förster-Nietzsche in the introduction of Thomas Common's early translation of the book.