Peter Kropotkin was born a prince in Russia, but he became a revolutionary anarchist-communist, frequently imprisoned and exiled. He’s the author of The Conquest of Bread, Mutual Aid: A Factor of Evolution, Memoirs of a Revolutionist, and Fields, Factories, and Workshops, introducing ideas such as mutual aid, worker cooperatives, housing collectives, horizontal decision-making, moneyless society, gift economy, community gardens, Wikipedia-style collaboration, Creative Commons ethos, and the anthropology of cooperation. He was also a Siberian explorer and an esteemed geologist.