Thus Spoke Zarathustra (German: Also sprach Zarathustra, sometimes translated Thus Spake Zarathustra), subtitled A Book for All and None (Ein Buch fur Alle und Keinen), is a written work by German philosopher Friedrich Nietzsche, composed in four parts between 1883 and 1885. Much of the work deals with ideas such as the "e;eternal recurrence of the same"e;, the parable on the "e;death of God"e;, and the "e;prophecy"e; of the Overman, which were first introduced in The Gay Science.Described by Nietzsche himself as "e;the deepest ever written"e;, 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 the style of the Bible is used by Nietzsche to present ideas of his which fundamentally oppose Judaeo-Christian morality and tradition.