James Kouzes and Barry Posner are two of the world’s preeminent researchers on leadership. This is the 25th anniversary, fifth edition version of their best-selling classic that has sold over 2 million copies. One of the things I most like about this book is the fact that it covers the SCIENCE of leadership. Kouzes and Posnar have been conducting empirical research for over three decades. Big Ideas we explore: The 5 Practices (<— key word!) of Exemplary Leaders, the foundation of leadership (= credibility which = …), Law #2: DWYSYWD, and the best-kept secret of leadership = …