Spencer Johnson

Patrick Spencer Johnson (November 24, 1938 – July 3, 2017) was an American author. He was known for the ValueTales series of children's books and for his 1998 motivational book "Who Moved My Cheese?", which recurred on the "New York Times" Bestseller list, on the "Publishers Weekly" Hardcover nonfiction list. 
Johnson was chairman of Spencer Johnson Partners until his death in 2017.
Johnson died in San Diego, California on July 3, 2017 of complications from pancreatic cancer, aged 78.