I think that I shall never see  
A poem lovely as a tree. 
A tree whose hungry mouth is prest 
Against the earth's sweet flowing breast; 
A tree that looks at God all day, 
And lifts her leafy arms to pray; 
A tree that may in Summer wear 
A nest of robins in her hair; 
Upon whose bosom snow has lain; 
Who intimately lives with rain. 
Poems are made by fools like me, 
But only God can make a tree.
Alfred Joyce Kilmer
http://www.poemhunter.com/poem/trees-51/