This was told me by a friend's twelve-year-old grandson: One day the zoo-keeper noticed that the orang-utang was reading two books-- the Bible and Darwin's Origin of Species. In surprise he asked the ape, "Why are you reading both those books"? "Well," said the orang-utang, "I just wanted to know if I was my brother's keeper or my keeper's brother."
(From the "Rest" of RHF)