In this work, Kropotkin points out what he considers to be the defects of the economic systems of feudalism and capitalism, and how he believes they thrive on and maintain poverty and scarcity, as symbol for richness and in spite of being in a time of abundance thanks to technology, while promoting privilege. He goes on to propose a more decentralised economic system based on mutual aid and voluntary cooperation, asserting that the tendencies for this kind of organisation already exist, both in evolution and in human society. He also talks about details of revolution and expropriation in order not to end in a reactionary way.