How moral values acquire a history › Core Thesis

Nietzsche treats moral concepts as the products of histories involving social conflict and psychological change. His First Essay proposes a “slave revolt in morality”: people unable to retaliate directly against their enemies create a valuation that condemns those enemies as evil and redescribes their own position as good. His account connects this reversal with Jewish priestly valuation and Christianity. These are claims made by Nietzsche's genealogy, not established facts about every believer's motives.

The historical and evaluative questions require different arguments. Showing how a value developed would not by itself determine whether to retain it. One could accept an account of Christianity's emergence while defending its moral commitments, or reject Nietzsche's history while agreeing with a particular criticism of guilt. The distinction matters whenever a disturbing origin story appears to settle a moral disagreement too quickly.