Thus Spoke Zarathustra, written by Friedrich Nietzsche between 1883 and 1885, is the philosopher's best-known work. This book, which Nietzsche likes to describe as the most profound work ever written, draws attention with its poetic style and wanders between the boundaries of literature and philosophy. Thus Spoke Zarathustra, which is based on the concepts of the superman and eternal return, is the cornerstone of Nietzsche's philosophy. The work, which advocates the necessity of ignoring existing values in order to produce new values, has a prophetic nature in this respect and stands out as one of the works that determine the philosophy of the 20th century.