Stephen C. Levinson is Director of the Max Planck Institute for Psycholinguistics and Professor of Comparative Linguistics at the University of Nijmegen. His publications include Pragmatics (Cambridge, 1983), Politeness (co-author Cambridge, 1987), Rethinking Linguistic Relativity (co-editor, Cambridge, 1996), Language Acquisition and Conceptual Development (co-editor, Cambridge, 2001) and Presumptive Meaning (2001).