John R.Gillis is the author of "Islands of the Mind; AWorld of Their Own Making: Myth Ritual, and the Quest for FamilyValues"; and "Commemorations." A professor of history emeritus at Rutgers University, he now divides his time between two coasts: Northern California and Maine.
Charles Tilly (1929-2008) was the Joseph L. Buttenwieser Professor of Social Science at Columbia University. His books include "Why?" (Princeton) and "Democracy".
Edward Shorter is the Hannah Professor of the History of Medicine in the Faculty of Medicine at the University of Toronto. He is the author of more than twenty books, including Written in the Flesh: A History of Desire, shortlisted for the 2005 Governor General's Literary Award for Non-Fiction. He is also a two-time winner of the Royal Society of Canada's Hannah Medal for writing in the history of medicine.