The author presents an attenuated reading of dualism in order of understanding the relationship between metaphysics, medicine and morality in The Passions of the Soul. This chapter seeks to show that this work is the necessary culmination of Cartesian metaphysical and physiological research, since it presents the moral life as the harmonious and organized integration of the passions, the body and the soul. Firstly, the chapter considers the definition of the passions of the soul; secondly, it studies the physiology of passions and their relation to movement; thirdly, it contextualizes the Treaty of the Passions in the conceptual scope of the union; finally, it studies the relationship between moral and physiological concerns in the work of ...