Ellen Johnson-Sirleaf

First Female President of Liberia & Nobel Peace Laureate

Dr. Robert Cialdini

CEO and President of Influence at Work; Author of the New York Times Bestseller "Influence: Science & Practice"

Clayton Christensen

Foremost Authority on Innovation and Father of Disruptive Innovation Theory; Author of Revolutionary Book “The Innovator’s Dilemma”

John McCain

Republican U.S. Senator, Arizona; 2008 Presidential Nominee

Faith of My Fathers: A Family Memoir

Dr. Samantha Nutt

Founder & Executive Director, War Child North America

Sir Richard Branson

Founder of Virgin Group

Finding My Virginity: The New Autobiography

Archbishop Desmond Tutu

Nobel Laureate & Human Rights Activist

William H. McRaven

Former Commander of the United States Special Operations Command

Geoffrey Moore

Managing Director of TCG Advisors; Author Best Known for His Book - "Dealing With Darwin"

Dan Ariely

Behavioral Economist, Professor at Duke University, Founding Member of The Center for Advanced Hindsight and Author

Doc Hendley

Musician; Founder and President of Wine to Water; CNN's Hero of the Year

Alison Gopnik

Professor of Psychology and Affiliate Professor of Philosophy, University of California, Berkeley

Katty Kay

Anchor, BBC World News America & Co-author, Womenomics & The Confidence Code

Maria Echaveste

Former U.S. Presidential Advisor to Bill Clinton

Dalia Mogahed

President and CEO, Mogahed Consulting, LLC; Author, "Who Speaks for Islam?"

Ayaan Hirsi Ali

Renowned Political Leader; Human Rights Activist; Best-selling Author

Peter Diamandis

Chairman and CEO, X PRIZE Foundation; Author

Ian Bremmer

President and Founder of Eurasia Group

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Peter Guber

CEO and Founder of Mandalay Entertainment; Golden State Warriors Partner; Author of Best-seller "Tell to Win"