American philosopher who has been the professor emeritus of philosophy at Princeton University.
He earned a B.A. and Ph.D. from John Hopkins University in 1949 and 1954, respectively.
He is a Fellow of the American Academy of Arts and Sciences and has received grants from the Guggenheim Foundation and the National Endowment for the Humanities.
His family comes from Langhorne, Pennsylvania.
Another philosopher who was from Pennsylvania is Walter Jackson Freeman II.