Thus Spoke Zarathustra: A Book for All and None

(German: Also sprach Zarathustra: Ein Buch für 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 Übermensch.