"Deliberations about moral action still tend to be connected, however subtly, to the Cartesian notion of a self split between steady, supervising reason - imbued with knowledge of what constitutes right action - and fluctuating passion - itself ‘right’ insofar as a beautiful object, say, might ‘rightly’ trigger the desire to possess it. But this Platonic, divided self is not as clear-cut in its duality as stereotypical notions of the rationalist, post-Cartesian, Enlightenment era would have it."