Steven Levitt

Economist, NY Times Bestselling Author of "Freakonomics," "SuperFreakonomics" & "Think Like a Freak"

Ashley Judd

Actress, Activist & Humanitarian

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Reshma Saujani

Lawyer, Politician, Founder of Girls Who Code & Marshall Plan for Moms

Amy Purdy

Former "Dancing with the Stars" Contestant & Paralympic Professional Snowboarder

George Takei

Actor, Social Justice Activist & Social Media Mega-Power

Ray Kurzweil

Chairman of Kurzweil Technologies, Inventor & Futurist; Author of "How to Create a Mind"

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Amy Cuddy

Social Psychologist, Bestselling Author & Award-Winning Harvard Lecturer

David McCandless

Author of "Information Is Beautiful" & Infographics Expert

Seth Mattison

Co-Founder & Chief Movement Officer of Luminate Labs, Expert on Workforce Trends and Business Strategy; Author

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Erik Qualman

Artificial Intelligence & Digital Transformation Expert, Futurist, Bestselling Author

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Giuliana Rancic

Entertainment Journalist & Breast Cancer Survivor

Joan Lunden

Award-Winning Journalist, Best-Selling Author, Health & Wellness Advocate

David Agus

Co-Founder of Navigenics, Author of "The End of Illness" & Host of "The Checkup with Dr. David Agus"; Professor of Medicine & Engineering at the University of Southern California

The Book of Animal Secrets

Jeremy Heimans

Co-Founder & Chairman of Purpose; Best-Selling Author; Lifelong Activist & World-Renowned Expert on Building Social Movements

Kay Warren

Christian Author

Nina Easton

Chair of Fortune Most Powerful Women International; SiriusXM Radio Host, Award-Winning Columnist & TV Commentator

Allison Massari

Celebrated Artist, Resilience Expert, Entrepreneur, Burn Survivor & Inspirational Storyteller

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Ben Casnocha

Award-Winning Entrepreneur, Silicon Valley Executive, Author & Venture Capitalist