 In this instance Mather championed the cause of Professor Sidney I. Kornhauser whose failure to achieve tenure was perceived by many colleagues to involve anti-semitic or anti-liberal bias among some university supporters and members of the administration.Kornhauser went on to a distinguished teaching career at the University of Louisville, where the medical school’s library bears his name.Mather took a leadership role in resisting the Massachusetts Teachers' Oath of 1935.