Melissa Merritt aims to locate one of the limits of Kant’s Aristotelianism. While it is widely supposed that Aristotle is the most relevant ancient reference point for Kant’s conception of virtue as “moral strength of will” (6:405), Merritt argues that Kant draws primarily on Stoic ethics. Much of what may seem Aristotelian in Kant’s remarks about virtue — such as his likening it to “the state of health proper to a human being” (6:384) — should be read as nods to a pervasive tendency of ancient Greek thought, which views ethics as a dimension of natural teleology. Ethics, so conceived, is centrally concerned with how the human being develops naturally towards the telos of virtue, conceived as the completion of our essentially rational nature. While this is a feature common to Aristotelian and Stoic ethics, Merritt argues that Kant favors a specifically Stoic approach, one that has a notion of “appropriate” or completion-promoting action — officium — at its heart.