BOSTON, Massachusetts (AP) -- Leading the world's wealthiest and probably most famous university sounds like the plummiest job in academe -- with a staff, a house, and a half-million dollar salary among the many perks. But running Harvard isn't easy. Neil Rudenstine, school president from 1991 to 2001, was forced to take leave of absence for exhaustion in 1994. His successor, Lawrence Summers, announced Tuesday he would resign June 30 after a tumultuous five years, his ambitious agenda to get Harvard's territorial undergraduate and professional schools on same page done in by faculty revolts and brusque management style. Harvard-watchers inside...