Writing partly in response to Social Darwinism, Kropotkin draws on his scientific knowledge to illustrate the phenomenon of cooperation. After examining the evidence of cooperation in nonhuman animals, pre-feudal societies, medieval cities, and in modern times, he concludes that cooperation and mutual aid are the most important factors in the evolution of the species and the ability to survive.

This volume seeks to provide answers for the curios and critical about anarchist theory, history, and practice.