Thus Spoke Zarathustra is a 19th century literary masterpiece and key philosophical work by Nietzsche. Zarathustra descends from his cave in the mountains after ten years of solitude, brimming with wisdom and love and wants to teach humanity.

The individual lessons and sermons delivered by Zarathustra cover most of the general themes of Nietzsche's mature philosophy, though often in highly symbolic and obscure form.