This is my favourite poem:

Nobody heard him, the dead man,
But still he lay moaning:
I was much further out than you thought
And not waving but drowning.

Poor chap, he always loved larking
And now he's dead
It must have been too cold for him his heart gave way,
They said.

Oh, no no no, it was too cold always
(Still the dead one lay moaning)
I was much too far out all my life
And not waving but drowning.

Not Waving But Drowning by Stevie Smith

I think it's fairly easy to understand the surface meaning and it expresses a lot of what I feel and what a lot of people feel (I think) and every time I re read it I find out a little bit more about it.