It is clear that François Poulain de la Barre adopts Cartesian philosophy to defend the equality of the sexes and develop mechanisms to achieve that equality. My aim in this paper is to examine just how Poulain leverages Cartesian philosophy, as well as how he develops it. I will be focused on the first of his three essays On the Equality of the Two Sexes, and argue that even while he accepts an aspect of Cartesian individualism about thinking things, he uses basic premises of Cartesian epistemology skeptical method, and a causal principle – to resituate those individuals in a social context. I conclude by suggesting that this socialization of Cartesian individuals ultimately has implications for the Cartesian account of a thinking thing, which are developed more clearly in On the Education of Ladies.