With this book, Marquardt has created the most exciting and practical model for executive development I have ever seen. Warren Bennis recently asked, poignantly, "Is there a future for leadership?" Marquardt is leading all management educators into the future of leadership. As director of an executive Master's program at American University, I am astonished at how powerful Marquardt's model is for developing "leaderly learners," in the magical phrase coined by Peter Vaill. Action learning is perfect for leaders who want to learn and learners who want to lead. Marquardt's chapter on the role of "action learning coach" is, by itself, worth a shelf of books of leadership. My executive participants are raving about how action learning has transformed their individual mindsets, allowing them to surface take-for-granted assumptions, as well as helped them begin to transform the culture or collective mindsets of their organizations.