Full Idea
The good man, qua good, takes pleasure in morally virtuous actions and dislikes vicious ones, just as a musician enjoys beautiful melodies and is pained by bad ones.
Gist of Idea
Good people enjoy virtuous action, just as musicians enjoy beautiful melodies
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1170a09)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.305
A Reaction
This is the best illustration of the Greek love of 'fine' [kalon] actions. 'That was a beautiful thing you just did'.