Bryan Garner, editor in chief of Black's Law Dictionary and author of the "HBR Guide to Better Business Writing."

Mary Robinson, former President of Ireland.

Daniel Pink, author of "To Sell Is Human" and the HBR article "A Radical Prescription for Sales."

Jorge Cauz, president of Encyclopaedia Britannica.

Jeanne Meister, partner at Future Workplace and contributor to the "HBR Guide to Managing Up and Across."

Christine Porath, associate professor at Georgetown University's McDonough School of Business and coauthor of the HBR article "The Price of Incivility."

John Mackey, co-CEO of Whole Foods Market and coauthor of "Conscious Capitalism: Liberating the Heroic Spirit of Business."

Tim Sullivan, editorial director of Harvard Business Review Press and coauthor of "The Org: The Underlying Logic of the Office."

Jeff Bezos, CEO of Amazon.com.

Alexandra Samuel, vice president of social media at Vision Critical.