Examines the work of Nietzsche, Weber, and Foucault as a distinct trajectory of modern thought, tracing the emergence and development of genealogy as a form of immanent critique. Aims to clarify the relations between these thinkers and to respond to Habermas' charge that they are nihilists by showing how genealogy as a practical activity is directed towards the achievement of human autonomy. Includes a glossary. This paperback edition is the same as the original published in 1994. Annotation c. by Book News, Inc., Portland, Or.