This seminar is a study of ecology as a decisively important category for moral and political thought. It will be organized into four overlapping units. Starting with a glance at the history of ecological concern as well as at the place of such concern in an age of anthropogenic environmental catastrophe, the first unit will take up understandings of ecology as saturated by ethical and political commitments and consider how these understandings challenge moral traditions that bear the imprint of classic empiricist and positivist presuppositions. The second unit will be devoted to discussion of Indigenous ecological thought, and the third will be devoted to discussion of some ecowomanist and ecofeminist ecologies. The fourth and longest unit will integrate themes from the previous three in exploring possibilities for ecological integrity and ecologically sound politics. Here we will look back as far as ecological themes in Plato’s Republic, discuss Marx’s theory of “ecological rift,” and consider the efforts of a wide range of social thinkers to inherit these and other ecological traditions in envisioning ecologically defensible forms of life. Course readings will include works by Octavia Butler, Andrew Dobson, André Gorz, Melanie Harris, David Hume, Robin Wall Kimmerer, Eduardo Kohn, Ursula Le Guin, Aldo Leopold, Drew Pendergrass, Plato, Karl Marx, Ariel Salleh, Vandana Shiva, Olúfémi Táíwò, Troy Vettese, and Kyle Powys Whyte.