Cristina Bicchieri

S. J. Patterson Harvie Professor of Social Thought and Comparative Ethics at the University Of Pennsylvania

Dalia Mogahed

President and CEO, Mogahed Consulting, LLC; Author, "Who Speaks for Islam?"

Damon Horowitz and Jody Lewen

Prison University Project

Dan Shapiro

Dan Shapiro, Ph.D. is an assistant professor in the college of medicine at the University of Arizona.

Dana Gioia

Poet; Former Chairman, National Endowment of the Arts

Danah Zohar

Danah Zohar is a physicist, philosopher and author.

Daniel Jacobson

Professor of Philosophy, University of Michigan; Founder, Freedom Flourishing Project

David Bellos

Translator

David M. Kennedy

Pulitzer Prize-Winning Historian & Donald J. McLachlan Professor of History Emeritus at Stanford University

David M. Rubenstein

Co-Founder & Co-CEO of The Carlyle Group

David P. Gushee

Mercer University Professor of Christian Ethics; Former President of the American Academy of Religion, Author of "Introducing Christian Ethics"

DeAngelo Burse

Relationship Strategist

Dov Zakheim

Fmr. Undersecretary of Defense (Comptroller)

Dr. Afiya Fredericks

Assistant Professor of Psychology at the University of the District of Columbia; Growth Mindset Expert

Dr. Michael Guillen

Scientist, Journalist, Author, Producer & Podcaster

God and Science Go Together According to Physicist

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

Eric Foner

Prominent Historian & Professor Emeritus of History at Columbia University

Erling Kagge

Norwegian Polar Explorer; Author of "Silence: In the Age of Noise" & "Philosophy for Polar Explorers"

Faisal Saeed Al-Mutar

Founder, Global Secular Humanist Movement

Francis Tapon

Author, Harvard MBA, and World Traveler