Born into the Russian aristocracy, Peter Kropotkin was one of the most important political and social thinkers of the late nineteenth century. A talented geographer, an explorer in his early youth, Kropotkin was also a revolutionary socialist and has long been considered one of the most influential theoreticians of the anarchist movement. By his exemplary life, and by generating a treasury of fertile ideas, he undoubtedly stirred the imagination of his own generation. Yet although his books are still being published, and he has had a deep influence in many fields, outside of anarchist circles Kropotkin is very much a neglected scholar. In this pioneering study, Brian Morris seeks to affirm the contemporary relevance of Kropotkin as a political and moral philosopher, and as a social ecologist. Well-researched, wide-ranging, and lucidly written, Morris’s analysis is an important contribution to the history of anarchism and to contemporary debates in political theory and social ecology.