Amy Gutmann

United States Ambassador to Germany; Former President of UPenn

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

Denise Austin

Fitness Expert, Author & Video Hall of Famer

Franklin Graham

President & CEO of the Billy Graham Evangelistic Association, Christian Evangelist & Missionary

Jeremy Siegel

Finance Professor & Author

Laura Carstensen

Stanford University, Professor of Psychology & Public Policy; Expert on Longevity & Aging

Lena Headey

Actress Best Known for Her Role as Cersei on "Game of Thrones"

Margaret A. Neale

Adams Distinguished Professor of Management at the Stanford Graduate School of Business, Co-director of the Executive Program for Women Leaders

Peter Docker

Leadership & "Start With Why" Culture Expert

Phil Robertson

Founder of Duck Commander & Star of A&E's hit show "Duck Dynasty"

Rachel Simmons

Internationally Recognized Educator & Best-Selling Author

Rick Steves

TV Host, Bestselling Guidebook Author & Leading Authority on European Travel

Travel as a Political Act with Rick Steves

Sara Moulton

Cookbook Author, TV Personality & Executive Chef of "Gourmet Magazine"

Scott McGillivray

Entrepreneur, Investor, Host & Author; Known For Hosting HGTV's "Income Property"

Shefali Tsabary

International Speaker on Conscious Parenting and Mindful Living

Steve Blank

Serial Entrepreneur; Founder, Lean Startup Movement

Xavier Sala-i-Martin

Chief Economic Advisor to the World Economic Forum

Yolanda Adams

Grammy Award-Winning Gospel Singer, Author, Radio Host & Philanthropist

Yves Morieux

Senior Advisor & Former Senior Partner & Managing Director at Boston Consulting Group