A professor of philosophy at Hebrew University in Jerusalem, Mark Steiner has specialized in the philosophy of mathematics as part of his more general attention to the philosophy of science. His work has included a critical account of the mathematical philosophy of Ludwig Wittgenstein. Dr. Steiner, a summa cum laude graduate of Columbia University, studied at Oxford University on a Fulbright Fellowship, and earned his Ph.D. in philosophy at Princeton University in 1972. After beginning his teaching career at Columbia as an assistant professor of philosophy, he was appointed to a senior lectureship in philosophy at Hebrew University in 1977, was promoted to associate professor six years later, and was named to his present position in 1998.Dr. Steiner served as a visiting professor of philosophy in Columbia’s summer session for twenty-seven years. His research has been supported by the National Science Foundation, the Dibner Foundation, and the Israel Academy of Sciences and Humanities. In addition to articles in scholarly journals, he is the author of Mathematical Knowledge (1975) and The Application of Mathematics as a Philosophical Problem, an attempt to explain the historical utility of mathematics in physics and what this might tell us about the human mind, which was published by Harvard University Press in 1998. His translation from Yiddish into English of Emune un Apikorses (1948) by Reuven Agushewitz, a Lithuanian-born Talmudic scholar who attacked the philosophy of materialism in all its historical versions, was published last year as Faith and Heresy by Yeshiva University Press.