About the Author

Bill Devall has studied the social organization, politics, psychology and philosophy of the environmental movement for fifteen years. He teaches at Humbolt State University in California and is active in many environmental groups including Earth First! and the Sierra Club.

George Sessions teaches philosophy at Sierra College California. He was appointed to the Mountaineering Committee of the the Sierra Club in 1962, has served as a philosophy consultant to the National Endowment for the Humanities, and is editor of the International Ecophilosophy Newsletter.