Received his B.A. in philosophy from Harvard in 1963. He then went to
Oxford to work with Gilbert Ryle, under whose supervision he completed
the D.Phil. in philosophy in 1965. He taught at U.C. Irvine from 1965
to 1971, when he moved to Tufts, where he has taught ever since, aside
from periods visiting at Harvard, Pittsburgh, Oxford, and the Ecole
Normal Superieure in Paris.