David Strong is an avid backpacker and fly fisherman who has been inspired by the natural world, the arts, literature, and various traditions of philosophy. All of us sense the magnitude of the human-caused transformation of Earth from the Industrial Revolution onward, and we are aware that every day we are advancing our scientific knowledge of the environmental consequences of this transformation. Less well understood has been the impact of this transformation on the human condition. Strong's work addresses this latter, the cultural and environmental challenges raised by this transformation. Typical of the kind of concrete and philosophical thinking he does is his, Crazy Mountains: Learning From Wilderness To Weigh Technology, a book that invites readers to reflect on larger philosophical and cultural issues by beginning with the Crazy Mountains near Billings.