A reference cited in understanding modernity is the French philosopher Rene Descartes, their role lies in its contribution to tackling the skeptical crisis and create a new philosophical method based on metaphysics and divine authority of reason, the methodical doubt exercise presented in the first two meditations, generating well, the solution to their own intellectual, political and cultural antagonisms of this historical period. But besides their participation in the intellectual history of the West will strengthen cultural values threatened by the Protestant Reformation, cementing dualism, overcoming skepticism and Pyrrhonian progress of Renaissance humanism, and basing himself momentous ideological apparatus of this historical process and legacy to all intellectual and philosophical development process of the hegemonic Western culture in the period of Modernity.