Earth Wisdom charts John Muir's amazing wilderness adventures and explores the worldview that sprang from them: a way of seeing the world unique in the West, with echoes only in the Taoism of ancient China. So challenging is Muir's philosophy, here termed "earth wisdom," that the environmental movement has let it remain hidden in Muir's little-known journals for a century. But Muir's worldview now provides the "new way of thinking" called for by Pope Francis to rescue humanity from the existential threat of climate change; Earth Wisdom shows how and why, touching on the needed changes in our economy, society, and way of life.