We build monuments to speak to the future, to say, "We were here. We have lived". A true legacy isn't what we build up to the heavens, or crave deep into stone. And rocks will crumble, paper disintigrates, and bone turns to powder. Only that which isn't in the physical realm and reaches in both directions can be eternal. Our ideas. They are what we leave behind. And only they are what can push us forward.