Daniel Guérin addressed himself to younger people “alienated from ideologies and ‘isms’ shorn of any meaning by an earlier generation” and particularly from “socialism, which has so often been betrayed by those who claimed to speak in its name, and which now provokes an understandable scepticism.” In this collection of essays, written between the 1950s and 1980s and published here for the first time in English, Guérin not only provides a critique of the socialist and communist parties of his day, he analyzes some of the most fundamental and pressing questions with which all radicals must engage. He does this by revisiting and drawing lessons from the history of the movement from the French revolution, through the conflicts between anarchists and Marxists, to the social revolution of 1968. These are not just abstract theoretical reflections, but are informed by the experiences of a lifetime of revolutionary commitments.