On the Genealogy of MoralsBy: Friedrich Nietzsche The companion book to Beyond Good and Evil, the three essays included here offer vital insights into Nietzsche's theories of morality and human psychology. Nietzsche claimed that the purpose of The Genealogy of Morals was to call attention to his previous writings. But in fact the book does much more than that, elucidating and expanding on the cryptic aphorisms of Beyond Good and Evil and signalling a return to the essay form.