My friend gave an English translation of this Chinese poem to me long time ago. It was a long poem and it was about two men, talking by the river and enjoying the moon. It contained a phrase, "Have you seen the moon and the water?" They talk about some things always changing and yet always there, like the moon and the river. I don't remember who wrote it, but I just remember it was beautiful. Does anybody know what this poem is?? Thanks in advance.