A. G. Lafley is the former Chairman of the Board, President, and Chief Executive Officer of Procter & Gamble. Under Lafley's leadership, P&G's sales doubled, its profits quadrupled, its market value increased by more than $100 billion, and its portfolio of billion-dollar brands--like Tide, Pampers, Olay, and Gillette--grew from 10 to 24. Today, Lafley consults on business and innovation strategy, advises on CEO succession and executive leadership development, and coaches experienced, new, and potential CEOs. Roger L. Martin is Dean of the University of Toronto's Rotman School of Management and an adviser to CEOs on strategy, design, innovation, and integrative thinking. In 2011, Roger was named by Thinkers50 as the sixth top management thinker in the world. This is his eighth book; he also contributes regularly to Harvard Business Review, the Financial Times, and the Washington Post, among others.