On the Genealogy of Morals is an 1887 philosophical treatise by Friedrich Nietzsche about the origins of morality. In the first part of the book, Nietzsche describes the difference between a noble, selfish moral spectrum of good versus bad and a spectrum of "slave morality" between good and evil. Nietzsche argues that this latter spectrum developed through Judaism and Christianity and has since battled the former. Later, Nietzsche examines the origins of punishment and its development into guilt, self-abasement and "ascetic ideals" he finds harmful.
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