Okay, I don't know Lamb's poem soo I can't quite relate to this :P I can see lots of allusions that I know will only make sense if I knew the poem! I'll look it up on Google at some point.
I do get the gist though. And it's a pretty haunting piece of work...

"How many of my own lit dreams
Must float along towards your shore
Before your million years have passed?"

Very nice :D