This article examines the thought of two prominent political theorists: John Rawls and Jürgen Habermas. Both Rawls and Habermas take deliberation to be central to the theory of justice. In their view, deliberation provides a necessary alternative to paternalistic models of power and authority. The deliberative turn has been celebrated as one of the great frontiers of political theory. But what are its limitations? What are its blind spots? This article argues that the deliberative turn has reinforced the anthropocentrism of modern political theory by categorically excluding the moral claims of animals from the sphere of justice. The article then proposes an evolutionary conception of justice as a way out of our anthropocentric social imaginary.