Stephen Walt

Robert and Renee Belfer Professor of International Affairs at Harvard University

Stephen M. Walt | Realism & Balance of Threat | GREAT MINDS

Tal Ben-Shahar

Best-Selling Author & Positive Psychology Expert

Amy Gutmann

United States Ambassador to Germany; Former President of UPenn

Kenneth Roth

Executive Director at Human Rights Watch

Rob Huebel

Actor, Comedian & Writer; Known for his Role in "Children's Hospital" and "Transparent"

Neil Giuliano

Gay Rights Activist & President and CEO of Greater Pheonix Leadership

Melissa Harris-Lacewell

Professor, Princeton University

Ingrid Newkirk

President, PETA

Ira Byock

Dartmouth-Hitchcock Medical Center

Eric Foner

Prominent Historian & Professor Emeritus of History at Columbia University

Timothy Patrick McCarthy

Award-Winning Scholar, Educator & Human Rights Activist; Faculty Member at Harvard University's Graduate School of Education and John F. Kennedy School of Government

Reckoning with History: Unfinished Stories of American Freedom

An Phung

Multimedia Journalist

David Bellos

Translator

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Shashi Tharoor

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

Bob Mankoff

Cartoon & Humor Editor; Humorist; President, CartoonCollections[.]com; Founder of The Cartoon Bank

Matthew Modine

Actor / Activist

Lisa Witter

Partner and Chief Change Officer, Fenton

Interview Lisa Witter (English)

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Jim Wallis

Theologian, Writer, Political Activist & Racial Justice Advocate

Christ in Crisis: Why We Need to Reclaim Jesus

David Remnick

Editor, The New Yorker

Spencer Wells

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

Eric Greitens

Missouri Governor; Former Navy SEAL and Founder of The Mission Continues; Best-Selling Author of "Strength and Compassion and The Heart and the Fist"

General Wesley Clark

Retired Four-Star Army General & Former NATO Supreme Allied Commander

Tim O'Brien

Pulitzer Prize Winning Novelist for "The Things They Carried"

Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Graham Hill

Founder of Life Edited & TreeHugger.com

Andrew Cohen

Founder, EnlightenNext

Kurt Andersen

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

Calvin Trillin

Author, Columnist, Humorist & Political Satirist