Why I do what I do?

As a young academic, I sometimes get folks asking me how and why I'm in such a field. I don't really know how to explain it to them, for them to understand. I sometimes feel I'm even not fully fit for this field (and the truth is I'm not!). But something drives me to excel at what I do -- a passion -- so clearly captured in Peter Levine's quote in this article. He says:

I love teaching because I am able to make a difference in a student’s future. Whether I help to unlock a new concept or see a student follow her/his lifelong dreams, teaching and passing on knowledge has become a passion of mine.

That's exactly how I feel as a young academic -- an aspiration I'm cultivating.