"This book brings together in one volume a series of essays that have been seminal in the development of environmental philosophy. The reader feels the full impact of a persuasive environmental philosophy as it is now operating to form a world view, oriented toward appropriate biological concern and conservation. Callicott is a fine stylist. His essays are not aimed simply at an audience of fellow philosophers, but also at the general literate public." — Holmes Rolston III, Colorado State University"Aldo Leopold's 'The Land Ethic' is the single most important piece of writing on environmental ethics by a nonphilosopher. This book represents the most comprehensive discussion of philosophical aspects of Leopold's land ethic available. More than any other person, Callicott has focused on these issues. But the book also presents a body of work by an important environmental philosopher in his own right."— Eugene C. Hargrove, University of Georgia