We should abandon blind imitations and investigate the reality

The first teaching of Bahá'u'lláh is the investigation of reality. Man must seek the reality himself, forsaking imitations and adherence to mere hereditary forms. As the nations of the world are following imitations in lieu of truth and as imitations are many and various, differences of belief have been productive of strife and warfare. So long as these imitations remain the oneness of the world of humanity is impossible. Therefore we must investigate the reality in order that by its light the clouds and darkness may be dispelled. Reality is one reality; it does not admit multiplicity or division. If the nations of the world investigate reality they will agree and become united. (Abdu'l-Baha, Baha'i World Faith, p. 238)