My friend and fellow writer Akshay Ahuja (read one of his stories here) lent me a copy of The Collected Poems of Weldon Kees last semester and I have just now gotten around to reading it.  Kees is not as well known as perhaps he should be -- in the introduction to his Collected Poems, Donald Justice says that although some may consider him a "minor" poet, he is still a significant one.  And hey, if Donald Justice is writing the introduction to your Collected Poems, you must have done something right.  
Kees's poetry is pretty bleak -- his most anthologized sonnet, "For My Daughter," puts forth a pretty solid don't-have-kids argument.  I thought since we're in the throes of hot, humid summer in Boston, I'd post this one instead; it's also depressing, but I really like the hybrid form (it's close to a villanelle, but decidedly not one).  Enjoy and please don't slit your wrists (at least not on my watch).  
The Beach in August
   The day the fat woman
 In the bright blue  bathing suit
 Walked into the water  and died,
 I thought about the  human
 Condition. Pieces of  old fruit
 Came in and were left  by the tide.
   What I thought about  the human
 Condition was this:  old fruit
 Comes in and is left,  and dries
 In the sun. Another  fat woman
 In a dull green  bathing suit
 Dives into the water  and dies.
 The pulmotors  glisten. It is noon.
We dry and die in the  sun While the seascape  arranges old fruit,
 Coming in and the  tide, glistening
 At noon. A woman,  moderately stout,
 In a nondescript  bathing suit,
 Swims to a pier. A  tall woman
 Steps toward the sea.  One thinks about the human
 Condition. The tide  goes in and goes out.
