Robert Hormats

Vice Chairman of Kissinger Associates Inc.

Harrison Ford

Award-Winning Actor Known for "Star Wars" & "Indiana Jones"

Bill Drayton

Social Entrepreneur, Founder & C.E.O of Ashoka. Leading an Everyone a Changemaker world movement.

Carl Bernstein

Pulitzer Prize-Winning Journalist, Author & Political Analyst

Dolores Huerta

Co-Founder of the United Farm Workers of America; First Latina Inducted into the National Women's Hall of Fame; Two-Time U.S. Presidential Award Recipient

Michael Gazzaniga

President of the Cognitive Neuroscientist Institute & Author of "Tales from Both Sides of the Brain: A Life in Neuroscience"

Tales from Both Sides of the Brain: A Life in Neuroscience

Jane Chen

Co-Founder & CEO of Embrace Innovations

Jay-Z

Renowned Rapper and Entrepreneur

Lynda Resnick

Vice Chair & Co-Owner of The Wonderful Company; Philanthropist

Lynda Resnick - UMASS intro to Daniel Ellsberg's honorary degree award

Jason Kottke

Designer of Silkscreen Typeface, Lifetime Achievement Award Blogger

Stephen Breyer

Former Associate Justice of the Supreme Court of the United States

A look at Justice Stephen Breyer's career and opinions on the bench

Craig Groeschel

Senior Pastor of Life.Church, Host of the Craig Groeschel Leadership Podcast & Best-Selling Author

Kate Clinton

One of America's Brightest Political Comedians

Alexis Bledel

Actress Known For "Gilmore Girls" & "The Sisterhood of the Traveling Pants"

Marilynne Robinson

Pulitzer Prize-Winning Author

Jane Elliott

Anti-Racism Activist, Educator, Feminist & LGBT Activist

Larry Irving

Internet Pioneer, Technology Strategist & Futurist; First African American Inducted Into Internet Hall of Fame; CEO of Irving Group

Carol Gilligan

Human Condition Psychologist & Ethicist; Founder of Difference Feminism

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Richard Posner

Judge, 7th Court of Appeals; Author; Senior Lecturer, University of Chicago Law

Stephen King

Partner, Omidyar Network; Chief Executive, Luminate

Cynthia McFadden

Current Correspondent at NBC News; Former Anchor & Correspondent for ABC News & Co-Anchor of Nightline

Lauryn Hill

Grammy Award-Winning Singer, Songwriter, Rapper & Former Member of the Fugees

Nicki Minaj

Rapper, Singer & Songwriter Known for Songs Like "Anaconda" and "Starships"

Kumi Naidoo

Executive Director African Civil Society Centre

Dr. Henry Louis Gates, Jr.

Award-Winning Filmmaker, Literary Scholar, Journalist & Cultural Critic; Director of the Hutchins Center for African & African American Research at Harvard University

Patrick Meier

Founder of Climate Robotics Network; Creator of the Concept of Crisis Mapping

Patrick Meier | TEDxMombasa - Robots vs. Climate Crisis

Todd Park

Co-founder and Executive Chairman, Co-founder of Athenahealth and Castlight Health; former U.S. Chief Technology Officer

Richard Gelles

Dean of The School of Social Policy & Practice, University of Pennsylvania

Mitch Horowitz

Author, "Occult America"