Calvin Trillin

Author, Columnist, Humorist & Political Satirist

Raj Patel

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

Tiffany Shlain

Founder of The Webby Awards; Emmy-Nominated Filmmaker, Bestselling Author, Internet Pioneer & Futurist

Dean Karlan

Behavioral Economist, Social Entrepreneur & Author

Dr. Samantha Nutt

Medical Doctor, Award-Winning Humanitarian, Bestselling Author & Founder of War Child USA

Immaculée Ilibagiza

Author, "Left to Tell: Discovering God Amidst the Rwandan Holocaust"

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Anna Dietrich

‎Entrepreneur; Consultant; Speaker; COO & Co-Founder of Terrafugia, Inc.

Laura Liswood

Secretary General, Council of Women World Leaders; Senior Advisor, Goldman Sachs

Kenneth Roth

Executive Director at Human Rights Watch

Virginia Postrel

Author & Columnist; Writes on The Intersection of Commerce & Culture

Jim Wallis

Theologian, Writer, Political Activist & Racial Justice Advocate

Christ in Crisis: Why We Need to Reclaim Jesus

David Bellos

Translator

Andrew Cohen

Founder, EnlightenNext

James A. Joseph

Former Ambassador to South Africa; Leader in Residence, Hart Leadership Program at Duke University

Richard Wolffe

Digital Executive, Best-Selling Author & Columnist at The Guardian

President's Speaker Series - YouTube

Ahmed Shihab-Eldin

Emmy-Nominated Journalist; Correspondent & Producer at VICE Media, LLC

Maria Conchita Alonso

Singer-Songwriter; Latin Actress; LGBT Rights Activist

Maude Barlow

Activist, Author & Former UN Senior Advisor on Water

Rose Mapendo

Humanitarian / Activist / Congolese Genocide Survivor

Yves Rossy

Military-Trained Pilot & Aviation Enthusiast

Jack Perkowski

Managing Partner, JFP Holdings Ltd., Founder, ASIMCO Technologies and Author, Managing the Dragon

James Rubin

Special Envoy and Coordinator for the U.S. Department of State’s Global Engagement Center, Served as U.S. Assistant Secretary of State for Public Affairs in the Clinton Administration from 1997–2000

Arvind Panagariya

Professor of Economics & Jagdish Bhagwati Professor of Indian Political Economy at Columbia University

John Prendergast

Human Rights Advocate and Author of Unlikely Brothers

Edward C. Chow

Senior Associate at the Center for Strategic and International Studies, Energy Security and Climate Change Program

Coleman Peterson

Former Executive Vice President, Wal-Mart. President/CEO of Hollis Enterprises, LLC

Helen Clark

Former Administrator of the United Nations Development Programme & Former Prime Minister of New Zealand

Sarah O. Ladislaw

Former Managing Director at Rocky Mountain Institute (RMI)

Marina Adshade

Author of "Dollars and Sex: How Economics Influences Sex and Love"