First among the great principles revealed by Him is that of the investigation of reality. The meaning is that every individual member of humankind is exhorted and commanded to set aside superstitious beliefs, traditions and blind imitation of ancestral forms in religion and investigate reality for himself. Inasmuch as the fundamental reality is one, all religions and nations of the world will become one through investigation of reality. The announcement of this principle is not found in any of the sacred Books of the past. ‘Abdu’l-Baha, The Promulgation of Universal Peace. Available from www.bahai.org/r/451466439