A mark in the sand

I was walking along the beach with some friends earlier this week and saw some marks in the sand. People seem to love writing their names on the sand, on a wall, in a tree, on a desk, a scribbling most other people won't appreciate. An indentation in the sand soon to be washed away by the waves or covered up by the wind. A scrawl to be sanded away, lost, forgotten. Yet there is still the urge to scratch marks into wood, drag a stick in the dirt. Why? I think that people want to leave their mark, no matter how brief. Maybe this comes from a deeper yearning to do something meaningful in this world, something that matters.
Leave your mark. You are here for a reason.