What are you leaving behind?

I saw a movie lastnight for the second time. 500 days of summer, and what a great movie it was. And after seeing it I remember thinking to myself am I ever going to be able to leave something behind this wonderful. And I have come to the conclusion that whatever it is that I do in this life, I will somehow find away to leave something behind for the human race, otherwise what the hell am I doing here. It is not enough to just make money and have these monetary things. I feel that it is our duty to do something more. Leave something behind that you can be proud of. Something that will mean something to more than just you. Leave something behind that in some way makes this world a better place.