Tony Porter

Educator & Activist Internationally Recognized For His Effort To End Violence Against Women

Dr. Carl Hart

Professor of Psychology & Chair of Department of Psychology at Columbia University

Jeff Allen

Stand-up Christian Comedian; Marriage Motivator

Stuart Firestein

Scientist; Advocate for the Public Understanding of Science

Camryn Manheim

Actress; Human Rights Activist; Writer & Producer

Claire Robinson

Known for "5 Ingredient Fix" on Food Network

Dolvett Quince

Fitness Guru & Trainer from "The Biggest Loser"

Stephen Lewis

Celebrated Humanitarian and Former UN Special Envoy for HIV/AIDS in Africa

Ali Vincent

First Female Winner of "The Biggest Loser"

Blythe Danner

Emmy Award-Winning Actress & Activist

Nancy Snyderman, MD

Retired Surgeon & Award-Winning Medical Journalist

Dan O'Brien

Olympic Gold Medalist & Decathlon Champion

Rishi Manchanda

Physician, Public Health Innovator, President & CEO of HealthBegins

Clay Walker

Country Music Artist Known For "What's It to You" & Multiple Sclerosis Survivor & Founder of Band Against MS

Eleanor Longden

Mental Health Advocate & Speaker; Postdoctoral Service User Research Manager at Psychosis Research Unit

Compassion for Voices: a tale of courage and hope

Phaedra Parks

Producer, Entertainment Attorney & Cast Member of Bravo's "The Real Housewives of Atlanta"

Vilayanur Ramachandran

Neuroscientist; Director of the Center for Brain & Cognition, University of California, San Diego

Deborah Roberts

ABC News Network Correspondent; Author, "Been There, Done That: Family Wisdom For Modern Times"

Anthony Atala

Director, Wake Forest Institute for Regenerative Medicine

Philip Zimbardo

Psychologist Known for the Notorious '1971 Stanford Prison Experiment;' Researcher of the Psychology of Heroism, Evilness and Time