A household icon of the environmental movement, Aldo Leopold (1887–1948) may be the most quoted conservationist in history. A Sand County Almanac has sold millions of copies and Leopold's writings are venerated for their perceptions about land and how people might live in concert with the whole community of life. But who is the man behind the words? How did he arrive at his profound and poetic insights, inspiring generations of environmentalists? Building on past scholarship and a fresh study of Leopold's unpublished archival materials, Julianne Lutz Newton retraces the intellectual journey generated by such passion and intelligence.