by Shel Silverstein from New Oriental English(Teens).
Sheldon Silverstein (September 25, 1930 – May 10, 1999) was an American poet, singer-songwriter, cartoonist, screenwriter, and author of children’s books. He styled himself as Uncle Shelby in some works. Translated into more than 30 languages, his books have sold over 20 million copies. He was the recipient of two Grammy Awards, as well as a Golden Globe and Academy Award nominee1.