"Pinkard has written a pathbreaking and compelling work that shows the importance of Sartre's extensive rethinking of his understanding of Hegel and Marx and the role of Heidegger's Letter on Humanism in his later thought. Key concepts such as subjectivity, agency, reciprocity, dialectic, materiality, and sociality are given original and philosophically rich interpretations, all presented with striking lucidity. Practice, Power, and Forms of Life is an extraordinary tour de force, both as interpretation and as philosophy, and it should lead to a major reassessment of the later Sartre."– "Robert Pippin, University of Chicago"