Leaders Eat Last: Why Some Teams Pull Together and Others Don't About the Author Simon Sinek, an unshakable optimist, is the author of the bestselling book Start with Why, which challenged traditional assumptions about how great leaders and great companies inspire people. He has presented his ideas to Fortune 100 companies and small start-ups; to nonprofits and members of Congress; to foreign ambassadors and the highest levels of the U.S. military, among many others. His TEDTalk based on Start with Why is the second most popular video of all time on TED.com. He lives in New York City.