Do not go where the path may lead, go instead where there is no path and leave a trail.
I garbled it a bit, I thought it was "do not follow where the path may lead," but I got the gist of it. Later I googled it to see the correct words and author--Ralph Waldo Emerson.
I had posted a card with that quotation above my desk in my University of Delaware dorm room. I was idealistic then, with hopes of changing the world. I had vague dreams of going into politics and becoming a Senator. Maybe I haven't accomplished much, but at least I've changed Lola's world.