I would like to present an alternative view to the debate on the Cartesian dualism mind and body. Therefore, I support the idea that dualism Cartesian substance is present only in Cartesian metaphysics and does not serve to explain the human condition, at least the mind and body union. Thus, I will try to show that the passions or emotions (they are our mental states) emerge from the interaction between the mind and the body. The passion cannot be reduced to the mind or the body taken separately. They are properties that emerge, in the strange sense of the term “emergency”, from the interaction of the mind with the body.