David Wilcox - How Long lyrics

I get carried along after midnight In the sound of the train on the tracks Where the rails run alongside the river And the water can never come back And the headlight is scanning the valley As the valley runs South from town And it wakes me where I have been sleeping With my window shade pulled down If my window's a mile from the river And if the engine sounds deep and low Then how long 'till I feel any closer To what's rumbling in my soul? How Long? Feeling it every day How Long? It's always a ways away How deep is the river that's flowing? How strong is the pull downstream? How far is the train engine going? How long have I had the same dream? Is there something that moves like a river Is there something that pulls like a train Is there something that rumbles in darkness And I don't even know it by name Is there some way to measure the distance Was it close to my heart all along And what is the voice that keeps asking How strong, how far, how long