A philosophy of action consists of a theory about how and why we do things and what motivates us to act. By juxtaposing the theory of environmental action implied by the works and life of John Muir with the philosophy of action suggested by Aldo Leopold's Land Ethic, we will illuminate the importance of a philosophy of action in determining one's approach to environmental decision making. This discussion is important for environmental education and the ethics these experiences inspire because both philosophies advocate very different visions of environmental action. In short, Muir demonstrates an ethic guided by the expected results of actions, an approach parallel to the responsible environmental behavior model (REB) of environmental education, whereas Leopold, demonstrates the role of intention and emotion in ethical decision making through the lens of community. (Contains 3 notes.)