Peter Thiel

Former CEO and Co-founder of PayPal; Technology Entrepreneur, Investor and Philanthropist

Sir Richard Branson

Businessman & Founder of Virgin Group

James Traub

Global Affairs & Politics Writer

Jimmy Wales

Founder of Wikipedia & Wikitribune

Kurt Andersen

Host of "Studio 360 from PRI and WNYC" & Author

Calvin Trillin

Author, Columnist, Humorist & Political Satirist

Parag Khanna

Managing Partner at FutureMap; Strategic Advisor to Governments & Global Companies; Bestselling Author; TED Speaker

Dan Ariely

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

Charles Robertson

Global Chief Economist, Head of Macro-strategy Renaissance Capital; Author, lead author of The Fastest Billion: The Story Behind Africa’s Economic Revolution

Timothy Bartik

The author of "Investing in Kids," Timothy Bartik studies state and local economies -- and analyzes the benefits of preschool as an economic development program.

Ronen Bergman

Investigative Journalist

Fredrik Carlström

CEO, Great Works America

Tom Freston

Principal, Firefly3; Former CEO, Viacom Inc.

Robert Lacey

Author, "The Kingdom"

Brian Hoffstein

Contributing Writer

Cody Adams

Managing Editor of The Floating University.

Nancy Pelosi

Former Speaker Of The House

Daniel Altman

Sports Analytics & Strategy Expert

Shashi Tharoor

Diplomat & Author; Former United Nations Under-Secretary-General

Robert Greene

New York Times Bestselling Author of "The 48 Laws of Power," "The Art of Seduction," "The 33 Strategies of War," and "The 50th Law"

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Irwin Kula

Irwin does challenge the status quo in the American spiritual landscape.

Bill O'Reilly

Host of "The O'Reilly Factor," Best-Selling Author & Syndicated News Columnist

Gerry Adams

President, Sinn Fein

Michael Lewis

Best-Selling Author of "The Fifth Risk", "Moneyball", and "The Big Short"

Going Infinite: The Rise and Fall of a New Tycoon

Juan Williams

New York Times Best-Selling Author, Fox News Political Analyst, Co-Host of "The Five" & Award-Winning Columnist

Graham Hill

Founder of Life Edited & TreeHugger.com

Moby

Musician, DJ, Photographer

Lawrence Summers

Professor & Former President of Harvard University; Former Secretary of the Treasury, Director of the National Economic Council, & Chief Economist of the World Bank

Ambassador Dennis Ross

Author, Counselor & William Davidson Distinguished Fellow at The Washington Institute; Former Special Assistant to President Obama