A Book for All and None, better known as Thus Spake Zarathustra, as a work of philosophical fiction between 1883 and 1885. The main character is supposed to be the historical Zoroaster, although aside from a few phrases, Nietzsche is not focused on any particular similarity. The majority of the book is made up of speeches by Zarathustra on a range of topics, with the refrain "Thus spake Zarathustra" capping off each one. The Gay Science, a previous book by Nietzsche, has the earliest appearance of Zarathustra.
The writing style of Zarathustra has given rise to numerous, frequently contradicting theories regarding what he says. "Explanations and statements are virtually always analogical and figurative," wrote Zarathustra.  Although there is some agreement on what Zarathustra says, there is disagreement on what he means when he says it. The Übermensch, the demise of God, the drive to power, and endless recurrence are all topics covered by Zarathustra. According to Nietzsche, his Zarathustra is the pinnacle of the German language and a tragedy, parody, polemic, and polemic. It was his favourite book that he had written. However, he was conscious that some readers might not comprehend it. He may have titled it A Book for All and None for this reason.