Aldo Leopold, who died in 1948, was a pioneer of environmental ethics and ecosystem management at the start of the twentieth century. This book looks at Leopold's continuing influence on environmental management practice and philosophy, and his broader impact on environmental issues generally as the patron saint of conservation. Ecologists, wildlife biologists, and other professional conservationists explore the ecological legacy of Aldo Leopold and his A Sand Country Almanac and his contributions to the environmental movement, the philosophy of science, and natural resource management. twelve personal essays describe the enormous impact he has had on each author, from influencing the daily operations of the U.S. Fish and Wildlife Service and the creation of a land-use ethics guide for Forest Service personnel, to much needed inspiration for continuing on in todays large, complex and often problematic world of science.