Inconsequential Moment

Today, as I was walking home from my class, a girl ran by me and dropped a pen on the side of the road. She didn't just kick a pen that was already on the ground; she dropped it from her pocket. I saw her drop it. By the time it occurred to me to pick it up and run to her, say, "Excuse me, but I think you dropped your pen," she was already at the door of the building she was running to. But I should have done it anyway.
Maybe I didn't want her to be late; she was already running. Maybe I wasn't sure it was her pen. But two seconds wouldn't have mattered, and I saw the pen drop from her pocket.
The truth is, for those few seconds, I was lazy. For those few seconds, I failed to do good.