Life-philosophy, central to 19th-century philosophical thought, is concerned with the meaning, value and purpose of life. This much-needed study returns to the central philosophical questions of Lebensphilosophie and reveals the ascendency of 'life' in contemporary philosophical thinking. Scholars from the disciplines of political theory, aesthetics, bioethics and ontology examine how the notion of life has made its way into contemporary philosophical discussions. They explore three main themes: the shift toward biological and technological views of life; the political implications of our conceptions of life; and the re-emergence of the idea of life in recent philosophical discussions about, for example, care of the self, scepticism, tragedy, desire, the emotions, and history. Anticipating new directions of philosophical thinking, this study restores a vital school of thought to crucial considerations about the dangers of contemporary politics and the threat of new technologies.