Ernest Sylvain NagelErnest Nagel was a philosopher of science who helped spearhead the logical positivist movement. He became a professor at Columbia University in 1967 and remained there until his retirement in 1970. Sylvian Bromberger was a professor of philosohy at MIT who specialized in linguistics. Adolf Grünbaum, a German American philosopher of science, was the Andrew Mellon Professor of Philosophy at the University of Pittsburgh. Read More Read Less