Master–slave morality
Master–slave morality (German: Herren- und Sklavenmoral) is a central theme of Friedrich Nietzsche's works, particularly in the first essay of his book On the Genealogy of Morality. Nietzsche argues that there are two fundamental types of morality: "master morality" and "slave morality", which correspond, respectively, to the dichotomies of "good/bad" and "good/evil".