This book explores C.G. Jungs complex relationship with Friedrich Nietzsche through the lens of the so-called visionary literary tradition. The book connects Jungs experience of the posthumously published Liber Novus (The Red Book) with his own (mis)understanding of Nietzsches Zarathustra, and formulates the hypothesis of Jung considering Zarathustra as Nietzsches Liber Novus –– both works being regarded by Jung as visionary experiences. After exploring some visionary authors often compared by Jung to Nietzsche (Goethe, Hölderlin, Spitteler, F. T. Vischer), the book focuses upon Nietzsche and Jung exclusively. It analyses stylistic similarities, as well as explicit references to Nietzsche and Zarathustra in Liber Novus, drawing on Jungs annotations in his own copy of Zarathustra. The book then uses Liber Novus as a prism to contextualize and understand Jungs five-year seminar on Zarathustra: allthe nuances of Jungs interpretation of Zarathustra can be fully explained, only when compared with Liber Novus and its symbology. One of the main topics of the book concerns the figure of Christ and Nietzsches and Jungs understandings of the death of God.