Lisa Randall

Award-Winning Physicist & Author

Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe

Naomi Wolf

Bestselling Author; Social Activist; Former Political Advisor to Al Gore and Bill Clinton

Alison Gopnik

Professor & World Leader in Children's Learning and Development

Dalia Mogahed

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

Daniel Dennett

Professor of Philosophy at Tufts University

Carl Pope

Senior Advisor to UN Envoy for Cities and Climate; Former CEO and Chairman of the Sierra Club

Gerry Adams

President, Sinn Fein

Pardis Sabeti

Infectious Disease Expert & Professor at Harvard University

Alan Weisman

Journalist / Author

Sharon Gannon

Co-Founder, Jivamukti Yoga

Michael Walzer

Professor Emeritus, The Institute for Advanced Study

Matt Bai

Nationally Known Journalist, Author & Screenwriter; Political Thought Leader

Nicholas Lemann

Dean, Columbia Univ. School of Journalism

John Harbison

Composer; Institute Prof. of Music, MIT

Billy Tauzin

CEO, Pharm. Research and Manufacturers of America

Arne Glimcher

Chairman, PaceWildenstein Galleries

Arthur Mutambara

Pres., Movement for Democratic Change (Zimbabwe)

Robert Wright

Journalist, Scholar, and Prize-Winning Author of Best-Selling books about Science, Evolutionary Psychology, History, Religion, and Game Theory

Irwin Kula

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

Annette Gordon-Reed

Professor of American Legal History at Harvard Law School & Pulitzer Prize-Winning Author

Glenn Loury

Merton P. Stoltz Professor of the Social Sciences & Professor of Economics at Brown University

Late Admissions: Confessions of a Black Conservative

David M. Kennedy

Pulitzer Prize-Winning Historian & Donald J. McLachlan Professor of History Emeritus at Stanford University

George Rupp

President & CEO, International Rescue Committee

Ronen Bergman

Investigative Journalist

Neelam Deo

Diplomat; Former Consul General of India

Richard Cizik

Lobbyist and Media Spokesman

Richard Wrangham

Primatologist, Harvard

Robert Lacey

Author, "The Kingdom"

Lionel Tiger

Professor of Anthropology, Rutgers University

James Traub

Global Affairs & Politics Writer