Simon Sinek is an author and speaker who teaches leaders and organizations how to inspire people. His books are Start with Why: How Great Leaders Inspire Everyone to Take Action; Leaders Eat Last: Why Some Teams Pull Together and Others Don’t; Together is Better; and the forthcoming Find Your Why: A Practical Guide to Discovering Purpose for You and Your Team. Sinek’s concept of Why was popularized through his 2009 Ted Talk, which has become the third most watched talk on TED.com. He is an adjunct staff member of the RAND Corporation and serves on the board of the Tami Stronach Dance Company.