Derrick Jensen is an American author and environmental activist who lives in Northern California. He has published several books questioning contemporary society and its values, including A Language Older Than Words, The Culture of Make Believe, and Endgame. He holds a B.S. in Mineral Engineering Physics from the Colorado School of Mines and an M.F.A. in Creative Writing from Eastern Washington University. He has also taught creative writing at Pelican Bay State Prison and Eastern Washington University.