What is nature? What is humanity's place in nature? And what is the relationship of society to the natural world? In an era of ecological breakdown, answering these questions has become of momentous importance for our everyday lives and for our future. In the essays of The Philosophy of Social Ecology, Murray Bookchin confronts these questions head on: invoking the ideas of mutualism, self-organization, and unity in diversity, in the service of ever expanding freedom.