David Benatar

Philosopher, Professor & Author

Dr. Wade Nobles

Professor Emeritus in the Department of Africana Studies at San Francisco State University and Notable Pioneer of the African-American Psychology Movement

Joshua Greene

Professor of Psychology and Faculty Member, Center for Brain Science, Harvard University

Alex Rosenberg

Author & Professor of Philosophy at Duke University

Simon Swerdlow

Futurist, Philosopher, Chernobyl Survivor, CEO & Founder of WeCO

Pamela Wilson

Vice President of Educational Content for Copyblogger Media.

Sallai Meridor

Sallai Meridor served as the Chairman of the Jewish Agency for Israel and the World Zionist Organization from 1999-2005.

John N Gray

Philosopher

John Aldrich

Professor of Political Science, Duke University

Kristen Wolf

Novelist

Qinglian He

Economist; Author

Jeff Foster

Llewellyn Vaughan-Lee

Sufi teacher

Peter Dziuban

author and lecturer on spirituality and nonduality

Gangaji

Gangaji shares a simple message

Mokshananda

Mokshananda, for the last 11 years, is a spiritual teacher by the request of Adyashant

Mukti

Co-founder Open Gate Sangha

Roman Krznaric

Cultural Thinker and Writer on the Art of Living and Social Change; Author, "Empathy"

John DeGioia

President, Georgetown University, USA

Michele Moody-Adams

Stratus Professor of Political Philosophy and Legal Theory, Columbia University