Dan Ariely

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

Sir Richard Branson

Businessman & Founder of Virgin Group

Jimmy Wales

Founder of Wikipedia & Wikitribune

Graham Hill

Founder of Life Edited & TreeHugger.com

Kurt Andersen

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

Jeffrey Israel

Author & Jewish Studies Professor at Williams College

Parag Khanna

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

Cody Adams

Managing Editor of The Floating University.

David Bellos

Translator

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Jason Kottke

Designer of Silkscreen Typeface, Lifetime Achievement Award Blogger

Tim O'Brien

Pulitzer Prize Winning Novelist for "The Things They Carried"

Moby

Musician, DJ, Photographer

Andrew Cohen

Founder, EnlightenNext

Calvin Trillin

Author, Columnist, Humorist & Political Satirist

Anna Deavere Smith

Award-Winning Actress, Playwright & Social Commentator

Peter Rojas

Co-founder of Gizmodo and of Engadget

Ray Kurzweil

Chairman of Kurzweil Technologies, Inventor & Futurist; Author of "How to Create a Mind"

Carol Gilligan

Human Condition Psychologist & Ethicist; Founder of Difference Feminism

Alain de Botton

Swiss Writer, Philosopher & Television Presenter

Daniel Dennett

Professor of Philosophy at Tufts University

Neil Giuliano

Gay Rights Activist & President and CEO of Greater Pheonix Leadership

Steven Mazie

Associate Professor of Political Studies, Bard High School Early College

An Phung

Multimedia Journalist

Spencer Wells

Geneticist, Anthropologist, Author, Entrepreneur, Adjunct professor at the University of Texas at Austin

Professor Richard Dawkins

Evolutionary Biologist & Best-Selling Author

Richard Dawkins & Lawrence Krauss ...

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

Jacques Pépin

Master French Chef; Food Columnist; Cookbook Author Educator

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Robert Hormats

Vice Chairman of Kissinger Associates Inc.