Nietzsche believed in the horror of existence: a world filled with meaningless suffering_suffering for no reason at all. He also believed in eternal recurrence, the view that that our lives will repeat infinitely, and that in each life every detail will be exactly the same. Furthermore, it was not enough for Nietzsche that eternal recurrence simply be accepted_he demanded that it be loved. Thus the philosopher who introduces eternal recurrence is the very same philosopher who also believes in the horror of existence. In this groundbreaking study, Philip Kain develops an insightful account of Nietzsche's strange and paradoxical view that a life of pain and suffering is perhaps the only life it really makes sense to want to live again.