What is behind "You are the wind and I am the sand"?

You are the wind, I am the sand, lingering in the world \x0d\ You are the wind, I am the sand, lingering in the world \x0d\ Take care, goodbye, be a drunken singer tonight, remember the butterfly, fly slowly \x0d\ Don't miss the wealth, it's all fake \x0d\ lingering. Remind me that a thousand words can't keep you \x0d\ in the vast sea of people, and I don't know where the mountains and waters are \x0d\ and I've been wandering around the world since then, watching the rosy clouds \x0d\ lingering and sorrowful side by side. You are the wind, I am the dribs and drabs of the past, and the clouds and flowers \x0d\ are long and affectionate, and home is home.