In this article, we offer a critical realist conception of curriculum that aims to cultivate critical thinking (CT) and liberate students from egocentric rationality. We first examine egocentric rationality as a problem emerging from the technicist paradigm of cultivating CT in higher education, exemplified by issues arising from the pedagogical activity of debate. We then examine existing approaches to cultivating CT, focusing on the extent to which their goals and conceptions of CT could liberate students from egocentric rationality. Drawing on Roy Bhaskar's stratified conception of being and principle of immanent critique, we offer a critical realist conception of curriculum, explaining its definition of CT as the capacity for self-critique. We shall illustrate, in the context of an undergraduate debate course, how such capacity can be developed in order to liberate students from egocentric rationality. Curriculum is thus a critical praxis, a created space where student's CT develops in a way that is intrinsically entwined with their being and becoming. This article extends the philosophical basis for integrating CT with curriculum and offers pedagogical implications.