A philosopher of physics with a special interest in the conceptual foundations of quantum theory and in quantum logic, Jeffrey Bub is a professor of philosophy at the University of Maryland and an adjunct professor of philosophy at The Johns Hopkins University. He is also an associate of the Center for Philosophy at the University of Pittsburgh and a permanent associate of the Center for the Philosophy of the Natural and Social Sciences (CPNSS) at the London School of Economics. A graduate of the University of Cape Town, where he took his bachelor's degree with distinction in pure mathematics and physics and earned first-class honors in applied mathematics, he received his Ph.D. in mathematical physics from the University of London in 1966. After three years at the University of Minnesota, where he was first a research specialist in the chemistry department and then a research associate in the Center for Philosophy of Science, he was appointed an assistant professor of physics at Yale University. He joined the faculty of the University of Western Ontario as an associate professor of philosophy in 1971 and was named a full professor four years later. Dr. Bub accepted his present position at Maryland in 1986. He has been a visiting professor at Princeton, Yale, the University of California at Irvine, the CPNSS at the London School of Economics, and the University of California at San Diego. His research has been supported by the National Science Foundation, the Canada Council, the Social Sciences and Humanities Research Council of Canada, the Engineering and National Sciences Research Council of Canada, and the University of Maryland. A former member of the governing board of the Philosophy of Science Association, he serves on the editorial boards of the Western Ontario Series in Philosophy of Science, Foundations of Physics Letters, Studies in the History and Philosophy of Modern Physics, and the Philosophy of Science. He has published some ninety articles in scientific and scholarly journals and is the author of two books: The Interpretation of Quantum Mechanics (1974) and Interpreting the Quantum World, winner of the Lakatos Award, which was published by Cambridge University Press in 1997 (revised paperback 1999) and hailed for providing a unified reconstruction and systematic assessment of quantum mechanics. Dr. Bub's current research is focused on understanding quantum information, and he recently won the University of Maryland's Kirwan Faculty Research and Scholarship Prize for papers published in this general area.