Full Idea
Selfishness is condemned, and justly, but selfishness is not simply to be fond of oneself, but to be excessively fond.
Gist of Idea
Selfishness is wrong not because it is self-love, but because it is excessive
Source
Aristotle (Politics [c.332 BCE], 1263b03)
Book Reference
Aristotle: 'Politics', ed/tr. Sinclair,T.A. /Saunders,T. [Penguin 1992], p.115
A Reaction
Aristotle is one of the main defendents of the idea that self-concern is an important part of morality. Stay fit! Improve your character! The mean between self-hatred and narcissism.