Dark Cloud

I stumble over a stone and stupidly instead of looking at the ground I see in the sky nothing is at static except me who stand still, I decided when I was a young not to run or wait for a train rather the train would wait for me, those trains have moved fast but I remain behind, now I wait for trains but they do not come, where have they gone and why? Motion with out purpose? lighter things move fast, fast moving clouds are soothing to eyes, heaver things more or less static, heaver and static clouds give more rain than the fast moving. i ponder and become grim like dark cloud.