新近出版的一本日记式畅销小说“The House on Mongo Street”，其中一篇讲到“我”屋外的四颗细瘦的树。它们的坚持是否能给我们多点坚持的理由。
“Their strength is secret. They send ferocious roots beneath the ground. They grow up and they grow down and grab the earth between their hairy toes and bite the sky with violent teeth and never quite their anger. This is how they keep.
Let one forget his reason for being, they’d all droop like tulips in a glass, each with their arms around the other. Keep, keep, keep, tress say when I sleep. They teach.
When I am too sad and too skinny to keep keeping, when I am a tiny thing against so many bricks, then it is I look at trees. When there is nothing left to look at on this street. Four who grew despite concrete. Four who reach and do not forget to reach. Four whose only reason is to be and be.”