Wanda Torres Gregory is Professor of Philosophy at Simmons College and the coeditor (with Donna Giancola) of World Ethics. Yvonne Unna is Associate Professor of Philosophy at Seton Hall University. Together, they translated Heidegger's On the Essence of Language: The Metaphysics of Language and the Essencing of the Word Concerning Herder's Treatise On the Origin of Language, also published by SUNY Press.