For me it is a love of books, and the magic of words. Sharing this is what I love about my job.
The first (mis-quoted) famous first lines author, Charles Dickens wasn't shy about laying it on with a trowel.
"It was the best of times, it was the worst of times; it was the age of wisdom, it was the age of foolishness; it was the epoch of belief, it was the epoch of incredulity; it was the season of Light, it was the season of Darkness; it was the spring of hope, it was the winter of despair; we had everything before us, we had nothing before us; we were all going directly to Heaven, we were all going the other way."
A Tale of Two Cities Charles Dickens