This article shows how the triumph of Socratic optimism in Nietzsche’s first book, The Birth of Tragedy, is due to a slave revolt in morality that promulgates a religious faith in the value of scientific truth. This early argument parallels his critique of the ascetic ideal that infects science in The Genealogy of Morality. I draw out the resemblance between Socrates’s martyrdom in The Birth and Jesus’s crucifixion in the Genealogy in order to illuminate how ritual human sacrifice mythically immortalizes (...) both figures, together inaugurating the ascetic ideals that Christianity will eventually unite. I discuss Nietzsche’s understanding of religious martyrdom and his explanation for the success of Christian Platonism, whose ascetic ideals ground the European value system that he is known for attacking. (shrink)