My favourite poem is T.S. Eliot's The Hollow Men. It's a bit of a mainstream choice I suppose. But for some reason, some of the images just keep occurring to me again and again. The final section especially. It's always felt relevant to my life, ever since I read it. It's a bit long to post the whole thing, so I'll just copy a few of my favourite lines:
At the hour when we are
Trembling with tenderness
Lips that would kiss
Form prayers to broken stone.>>149
What is your favourite species of tree?