Book excerpt: At last, there’s a business leadership book that really tackles the tough issues of integrity and governance. Taking a unique approach to leadership, this book gathers the path-breaking perspectives of influential shareholder activists; opinion-leading CEOs of major firms; trailblazing, distinguished academics; and courageous regulators. The all-star roster of contributors from the corporate world and academia includes Vanguard's John Bogle, former SEC Chairman Arthur Levitt, and Harvard Business School's Rosabeth Moss Kanter. Sherron Watkins, Enron whistleblower and Time Person of the Year, shares an inside look at Enron, and Barbara Ley Toffler, former head of Arthur Andersen's Ethics Practice, paints a picture of Anderson Consulting before their fall.