Spencer Johnson, M.D., was an influential American author and thought leader renowned for his ability to distill complex topics into simple, life-changing parables. Most famous for co-authoring the business classic “The One Minute Manager” and writing the global bestseller “Who Moved My Cheese?”, Johnson is a primary authority on leadership and change management. With over 50 million books in print, his work remains a fundamental resource for organizational productivity and personal development worldwide.