Jim Collins is a student and teacher of what makes great companies tick, and a Socratic advisor to leaders in the business and social sectors. Having invested more than a quarter century in rigorous research, he has authored or coauthored six books that have sold in total more than 10 million copies worldwide. They include Good to Great, the #1 bestseller, which examines why some companies make the leap to superior results, along with its companion work Good to Great and the Social Sectors; the enduring classic Built to Last, which explores how some leaders build companies that remain visionary for generations; How the Mighty Fall, which delves into how once-great companies can self-destruct; and Great by Choice, which is about thriving in chaos-why some do, and others don't. His most recent publication is Turning the Flywheel. It explores how leaders can best harness the flywheel effect to build and accelerate momentum.