This essay examines the relationship between Philipp Frank and James Bryant Conant in light of two issues that engaged leading American intellectuals in the mid-twentieth century: the place of metaphysics in higher education and the responsibilities of intellectuals as educators to defend democracy against the rise of totalitarianism. It suggests that Frank's relationship to pragmatism was nourished by his professional and intellectual relationships to Conant and that each of their contributions to our understanding of science is inseparable from their efforts to engage their fellow intellectuals as well as the public about these pressing issues of their day.