Mario De Caro is Hilary Putnam's literary executor and Professor of Moral Philosophy at Roma Tre University. He is Associate Editor of the Journal of the American Philosophical Association, a regular visiting professor at Tufts University, and author of five volumes in Italian.

David Macarthur is Associate Professor of Philosophy at the University of Sydney. With Mario De Caro, he edited Naturalism in Question, Naturalism and Normativity, and Hilary Putnam's Philosophy in an Age of Science. He also edited Hilary and Ruth Anna Putnam's Pragmatism as a Way of Life.