Full Idea
One element of the soul is irrational but receptive to reason; it struggles and strains against reason. ...In the continent (controlled) man it is obedient to reason, and is more amenable in the virtuous man, as it is in harmony with rational principle.
Gist of Idea
In a controlled person the receptive part of the soul is obedient, and it is in harmony in the virtuous
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1102b16)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.89
A Reaction
The very core of Aristotle's theory, with an image of psychic harmony derived from Plato (who likens in to a well-tuned musical instrument). Aristotle's merely controlled man ('enkrateia') sounds like Kant's truly moral man, following duty.