Phi Beta Sigma Fraternity, Incorporated was founded on January 9th, 1914 on the campus of Howard University in Washington D.C. by three honorable men named: Abram Langston Taylor, Charles Ignatius Brown, and Leonard Francis Morse. ​This organization founded Zeta Phi Beta Sorority, Incorporated on January 16th, 1920 on the campus of Howard University. Phi Beta Sigma Fraternity, Inc. and Zeta Phi Beta Sorority, Inc. are the First and ONLY constitutionally bound black Greek-lettered organizations. Their motto is "Culture For Service, Service For Humanity" and their principles promote Brotherhood, Scholarship, and Service.