Columbia President Lee Bollinger has been publicly praising the sacredness of free speech in the wake of the violent melee that last week forced the university to shut down a speech by Minuteman Project founder Jim Gilchrist. Yet while Bollinger talks a good game, it doesn't appear that his own university is listening to him. Columbia's Teachers College - one of our nation's most prestigious education schools - has policies that go beyond telling students what they can or can't say; it tells them even what they are required to believe. At Teachers College, students are required to have a...