This paper aims to discern the limits of the highly influential
Incorporation Thesis to give proper weight to our sensuous side in
Kant’s theory of moral action. I first examine the view of the faculties
underpinning the theory, which allows me to outline the passage from
natural to rational action. This enables me to designate the factors
involved in actual human agency and thereby to show that, contrary to
what the Incorporation Thesis may tempt one to believe, we do not always
act on maxims. The result is a revised and more balanced view of how
Kant sees the character of moral life.