ΣΦΕ (Sigma Phi Epsilon), a social fraternity founded in 1901, has the largest undergraduate numbers of any social fraternity in the nation. It is founded on three principles: virtue, diligence and brotherly love. In 1992, the fraternity began promoting the adoption of the 'Balanced Man' program, which abolished pledgeship, instituted year-round recruitment and advocated dry housing and lifestyles for its membership. While not all Sigma Phi Epsilon chapters (or SigEp) have adopted the program, many have, and it is credited with the ongoing success of the fraternity on a national level.