Hopkins soon was joined by two classmates and close friends who were also equally unhappy with the hazing situation. They were Greenfield Quarles, from Arkansas, a Kentuckian by birth, and James McIlvaine Riley from St. Louis, Missouri. These three men began a movement to completely abolish the hazing system at VMI. Their efforts climaxed on a moonlit October night in 1868, presumably following Bible study at the superintendent's home, when the three met at a limestone outcropping on the edge of the VMI parade ground. Hopkins, Quarles and Riley clasped hands on the Bible and gave their solemn pledge to form a brotherhood of a new society they called the Legion of Honor.
The vows taken by these three Founders bound them together to oppose hazing at VMI and encouraged the application of the Principle of Honor in all their relationships. That the founders should adopt Honor as a guiding principle was a natural move since a rigid code of Honor was already an established traditon of the VMI Corps of Cadets. The Honor system at VMI required each cadet to conform to the duty imposed by his conscience that each act be governed by a high sense of Honor.