No individual in the early history of American psychology is more identified with the promotion of applied psychology than Hugo Münsterberg, whose books and articles on applied topics such as industrial psychology, forensic psychology, psychotherapy, and educational psychology made him one of the most visible psychologists of his day. But there is an earlier chapter to Münsterberg's life that tells a very different story of a Münsterberg opposed to application. The story begins in 1898 when he wrote an article for an American magazine in which he told teachers that the findings of experimental psychology had no relevance for education, setting off a firestorm of controversy among his colleagues in psychology and education. This article describes Münsterberg's early denigration of applied psychology and his subsequent transformation as applied psychologist. Reasons for that transformation are discussed as well as issues involving the stigma associated with applied psychology and the popularization of psychology.