adding this to my list of books to buy/read

"A person who cares about something is, as it were, invested in it. He identifies himself with what he cares about in the sense that he makes himself vulnerable to losses and susceptible to benefits depending upon whether what he cares about is diminished or enhanced. Thus he concerns himself with what concerns it, giving particular attention to such things and directing his behavior accordingly. Insofar as the person's life is in whole or in part devoted to anything, rather than being merely a sequence of events whose themes and structures he makes no effort to fashion, it is devoted to this."

Harry G. Frankfurt: The Importance of What We Care About: Philosophical Essays (link)

- JennyKim