Thus Spoke Zarathustra: A Book for All and None (German: Also sprach Zarathustra: Ein Buch f r Alle und Keinen) is a philosophical novel by German philosopher Friedrich Nietzsche, composed in four parts between 1883 and 1885. Much of the work deals with ideas such as the eternal recurrence of the same , the parable on the death of God , and the prophecy of the Overman. Described by Nietzsche himself as the deepest ever written , the book is a dense and esoteric treatise on philosophy and morality, featuring as protagonist a fictionalized Zarathustra. A central irony of the text is that Nietzsche mimics the style of the Bible in order to present ideas which fundamentally oppose Christian and Jewish morality and tradition. (Source: wikipedia.org)