Putting Fraternities in Their Place

How one college is trying to redefine social life with the (sometimes grudging) help of its Greek system

At Union College's Sigma Phi chapter, the fraternity brothers have a new Friday-afternoon tradition. They don sports jackets and ties, pour cups of tea, and sit down with a different professor each week for an hourlong intellectual debate.

One Friday in late January, they welcome Andrew J. F. Morris, an assistant professor of history, to the dormitory wing that now serves as