Professor Stein, born 1929, received a BA from Columbia University in 1947, a PhD from the University of Chicago (Department of Philosophy) in 1958, and an MS from the University of Michigan at Ann Arbor (Department of Mathematics) in 1959. His work in philosophy has centered in the philosophy of physics, and to some extent that of mathematics, with a strong emphasis upon the history of physics and mathematics, and the history of philosophy itself as it has been concerned with those disciplines, in periods ranging from antiquity ("Comments on 'The Thesis of Parmenides'" [1969]); "Eudoxos and Dedekind: On the Ancient Greek Theory of Ratios and Its Relation to Modern Mathematics" [1995]) through the present (e.g., "A Problem in Hilbert Space Theory Arising from the Quantum Theory of Measurement" [1979]; "On the Present State of the Philosophy of Quantum Mechanics" [1982]; "On Relativity Theory and Openness of the Future" [1991]; "On Quantum Non-locality, Special Relativity, and Counterfactual Reasoning" [forthcoming]), with considerable attention to the seventeenth century (e.g., "Newtonian Space-Time" [1967]; "On Locke, 'the Great Huygenius, and the incomparable Mr. Newton'" [1990]; "On Philosophy and Natural Philosophy in the Seventeenth Century" [1993]; "Newton's Metaphysics" [2002]). He is currently preparing a number of papers for publication (see list of pending items in his curriculum vitæ), and preparing also the first volume, dedicated to papers that center on the work of Isaac Newton, of a projected collected edition of his articles.