Prof. Kurt Biedenkopf, who has served as the president of the Ruhr-University Bochum, Secretary General of the CDU and former president of the State of Saxony, will deliver the keynote speech of the "25th Anniversary of the Fall of the Wall Week." Biedenkopf was the first German exchange student to Davidson College in 1949. Free. 8 p.m. in the Lilly Family Gallery of Chambers Building. For more information call 704-894-2855.