Librarian’s note: There is more than one author in the Goodreads database with this name. Spencer Johnson, M.D. left behind a medical career to write short books about life. The most famous was “Who Moved My Cheese?" published in 1998. The book became a publishing phenomenon and a workplace manual. Over 50 million copies of Spencer Johnson’s books are in use worldwide in 47 languages. Dr. Johnson's education included a psychology degree from the University of Southern California, a M.D. from the Royal College of Surgeons and medical clerkships at Harvard Medical School and the Mayo Clinic.