Another Borrowed Tune

How many times can I hear somebody say "Can you help me", before I have to turn away? Now they're all gone, I'll be acting like there's nothing wrong Walking down the corridor, to hide behind my empty door A figure in a corridor, an echo through an empty door A thought drifting out to space, An expression on an expressionless face A speck on a grain of sand, the world or just a man? Hope it matters in some way, guess we'll all find out one day I'm singing this borrowed tune, I took from Neil Young Who took this borrowed tune that The Rolling Stones once sung And I can't write my own, I'm just too damn worn down So many hours in the day, but after work they all just fade away