November 5

Its [the principle of the Oneness of Mankind] implications are deeper, its claims greater than any which the Prophets of old were allowed to advance. Its message is applicable not only to the individual, but concerns itself primarily with the nature of those essential relationships that must bind all the states and nations as members of one human family. It does not constitute merely the enunciation of an ideal, but stands inseparably associated with an institution adequate to embody its truth, demonstrate its validity, and perpetuate its influence. 
(Shoghi Effendi, from a message dated November 28, 1931; ‘The World Order of Baha’u’llah’; The Compilation of Compilations, vol. II, Peace)