Richard Dreyfuss

Academy Award-Winning Actor

Sheryl Sandberg

Former COO of Meta, Bestselling Author & Founder of Leanin.org

Sheryl Sandberg Interview: From Google to Facebook - YouTube

Newt Gingrich

Former Speaker of the House of Representatives; New York Times Best-Selling Author & Co-Host for "Crossfire"

Chris Sacca

Google & Twitter Innovation Guru

Martha Raddatz

ABC News Chief Global Affairs Correspondent & Co-Anchor of "This Week with George Stephanopoulos"

Kenyon College: Martha Raddatz Commencement Address 2015 ...

Oby Ezekwesili

Senior Economic Advisor at Open Society Foundation

Thomas L. Friedman

Three-Time Pulitzer Prize Winning Commentator; New York Times Foreign Affairs Columnist; Author of "The World Is Flat"

Thank You for Being Late: An Optimist's Guide to Thriving in the Age of Accelerations

Diane Sawyer

Anchor, ABC World News

Oscar Arias

Former President of Costa Rica & Nobel Laureate

Gary Kovacs

CEO of Accela & Former CEO of Mozilla

Wadah Khanfar

President & Co-founder of Al Sharq Forum & Chairman of Common Action Forum, Former Director-General of the Al Jazeera Network

Wadah Khanfar | This House Would Pressurise Israel to Exchange

Michael Duke

Former CEO of Walmart

Alexander Stubb

Former Prime Minister of Finland

Roula Khalof

Editor of the Financial Times

Nicholas Kristof & Sheryl WuDunn

Pulitzer Prize-Winning Journalists for "Half the Sky" & Human Rights Advocates

George J. Mitchell

U.S. Senator, 1980 - 1995 & Former Special Envoy for the Middle East

Jenny Shipley

Former & First Female Prime Minister of New Zealand; First Woman to Have Led the National Party

Charles Leadbeater

Innovation Expert & Author

Kathleen Turner

Actress & Civil Liberties Activist

Drew Houston

Co-Founder & CEO of Dropbox