Mount Mercy University will welcome Rt. Rev. John Klassen, O.S.B., bio-chemist and abbot of the Benedictine Community, St. John's Abbey in Collegeville, for the annual Aquinas Lecture on October 25 at 7:00 p.m. in Betty Cherry Heritage Hall on the Mount Mercy campus. The lecture is free and open to the public; seating may be limited. A shuttle service will be available for those needing assistance from the parking lot to the entrance.