Full Idea
Aristotle thinks that those who think self-love is bad are identifying the self with the lower, irrational parts of the soul.
Gist of Idea
For Aristotle, true self-love is love of the higher parts of one's soul
Source
report of Aristotle (Nicomachean Ethics [c.334 BCE]) by Julia Annas - The Morality of Happiness 12.1
Book Reference
Annas,Julia: 'The Morality of Happiness' [OUP 1995], p.256
A Reaction
That seems to imply love of (and developmen of) one's intellect, but surely the less bookish person can develop their social virtues in a self-loving way?