In the 21st century digital age, leaders face challenges of market volatility and uncertainty, accelerated technological change, demands of the Millennial and GenZ workforce, and existential threats from pandemics and climate change. Our leaders, however, are still using a 20th century industrial age paradigm-hierarchy based on power, control, and fear. This approach has failed to meet our pressing challenges. We need a paradigm shift to collaboration, the 4th evolution of leadership based on trust, ownership, and psychological safety. The era of collaboration has begun, where "We" is more important than "I," collective action is more effective than rugged individualism, and collaborative leaders inspire, engage, and facilitate the workforce. Leadership's 4th Evolution: Collaboration for the 21st Century equips students and leaders with a principle-based, award-winning methodology that recognizes people want to be trusted, respected, engaged, and supported. Based on 40 years of research and consulting work with Fortune 500 leaders and companies on five continents, the book provides proven tools and processes that empower leaders, teams, and organizations to become collaborative. Grounded in the best-practice Collaborative Method, these tools and processes enable leaders to implement the paradigm shift. This is a handbook for organizational and global transformation that ensures the workplace is fit for the human spirit and that global challenges can be addressed. Leadership's 4th Evolution is a key resource for leadership courses across a wide range of professions, including engineering, business, public administration, education, and social work. It is equally critical for corporate universities, executive education programs, and any industry leader who understands that 21st century challenges require a 21st century leadership methodology. "Having worked with Dr. Marshall's framework and approach to leadership in multiple organizations, I can attest to the power and the practicality of this approach to leadership in a modern organization. It was essential to our organizational and team development at Microsoft and later at VMware. This is an essential guide to managing in a world that has transformed for nearly every organization." Tony Scott, Former CIO of Microsoft, VMware and Disney Former Federal CIO for President Barack Obama CEO, Tony Scott & Company "I have seen the collaborative approach described in this book build trust and produce outstanding results. It should be considered by every business leader." J. W. Marriott, Jr., Chairman and CEO, Marriott International "This book is a remarkable combination of principles, historical analysis, review of major theories of organization development, and detailed prescriptions for the kind of leadership and collaborative group work that will be necessary to save our planet and the kind of civil society that we all value. By reviewing the work of many academic theorists, successful consultants, and analysts of leadership, group, and cultural dynamics, the author extracts the important insights, principles, and practices necessary to cope with the evermore complex challenges that our world presents us with. This book is, in effect, a manifesto to move from an egocentric 'I and me' society to a collaborative 'We' society." Edgar H. Schein, Professor Emeritus, MIT Sloan School of Management Author with Peter Schein of Organizational Cultural and Leadership (2017), Humble Leadership (2018) and The Corporate Culture Survival Guide, 3rd Edition (2019) Edward M. Marshall, Ph.D. is a pioneer and thought leader in the field of collaborative leadership and cultural transformation. He has authored two best-selling business books, Transforming the Way We Work: The Power of the Collaborative Workplace, and Building Trust at the Speed of Change. Dr. Marshall teaches leadership at Duke University, is an executive coach, and manages a consulting firm. He holds three service marks, has received a Lifetime Top 15 Trust Thought Leader award, and writes a nationally syndicated workplace column for American City Business Journals.