A Passion for Nature is the most complete account of the great conservationist and founder of the Sierra Club ever written. It is the first to be based on Muir's full private correspondence and to meet modern scholarly standards. Yet it is also full of rich detail and personal anecdote, uncovering the complex inner life behind the legend of the solitary mountain man. It traces Muir from his boyhood in Scotland and frontier Wisconsin to his adult life in California right after the Civil War up to his death on the eve of World War One.