Book excerpt: Professors, administrators, and trustees talk a lot about education but give little attention to teaching, especially at major research universities. In A Professor's Duties, the distinguished philosopher Peter J. Markie adds to the expanding discussion of the ethics of college teaching. Part One concentrates on the obligations of individual professors, primarily with regard to issues about what and how to teach. Part Two expands Professor Markie's views by providing a selection of the most significant previously published writings on the ethics of college teaching.