The center of the Core Campus is the Stratton Quadrangle, named after William Stratton, who served as the Governor of Illinois from 1953 to 1961 and was the university's first commencement speaker in June 1960. The quadrangle is designed with no direct pathway between two buildings, this provides students with exposure to nature during the commute between buildings. The quadrangle also contains The Rock, which is constantly changing color because student organizations, such as fraternities and sororities, compete to see who can keep it painted their colors the longest. The original Rock, a rose quartz boulder, was donated by the supplier of stone for the original Core Campus buildings. It was stolen during the night of October 7–8, 2003 and was found in pieces nine days later. A replacement Rock of limestone was donated by the Unimin Corporation in 2003, installed on March 14 and dedicated on April 7. The remnants of the original Rock were put on display in the Morris University Center.