Raghuram Rajan

Professor of Finance at The University of Chicago & Author

Caitlyn Jenner

TV Personality & Olympic Gold Medalist; Co-Host of "Keeping Up With Sports"

Mitt and Ann Romney

Former Presidential Candidate and Governor of Massachusetts & Former First Lady of Massachusetts and Wife of Mitt Romney

Anderson Cooper

Journalist, TV Personality, Anchor of CNN's "Anderson Cooper 360°"

Gladys Knight

Singer-Songwriter & Actress

Nick Clegg

President, Global Affairs at Meta; Former UK Deputy Prime Minister

How To Stop Brexit (And Make Britain Great Again)

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

Gayle King

Co-Host of "CBS This Morning" & Editor-At-Large of O, The Oprah Magazine

Tony Abbott

Former Prime Minister of Australia

Tony Abbott Speaks Out

Mehmood Khan

Vice Chairman & Chief Scientific Officer at PepsiCo

Joe Hockey

Political Commentator, Former Australian Ambassador to the United States

Astro Teller

Captain of Moonshots, Google X

Jan Koum

Founder of WhatsApp Inc.

Peter Thiel

Former CEO and Co-founder of PayPal; Technology Entrepreneur, Investor and Philanthropist

Jonathan Bush

Technology Entrepreneur; Co-Founder & Former CEO of athenahealth

Michael Liebreich

Chairman & CEO of Liebreich Associates

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Susan Sarandon

Academy-Winning Actress & Activist

Andie MacDowell

Film Actress

Tucker Carlson

Political Commentator & Host of Tucker on Twitter