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. Many people and sects in Írán have sought reality through the guidance and teaching of Bahá’u’lláh. They have become united and now live in a state of agreement and love; among them there is no longer the least trace of enmity and strife. The Jews were expecting the appearance of the Messiah, looking forward to it with devotion of heart and soul but because they were submerged in imitations they did not believe in His Holiness Jesus Christ when he appeared. Finally they rose against Him even to the extreme of persecution and shedding His blood. Had they investigated reality they would have accepted their promised Messiah. These blind imitations and hereditary prejudices have invariably become the cause of bitterness and hatred and have filled the world with darkness and violence of war. Therefore we must seek the fundamental truth in order to extricate ourselves from such conditions and then with illumined faces find the pathway to the kingdom of God. The second teaching of Bahá’u’lláh concerns the unity of mankind. All are the servants of God and members of one human family. God has created all and all are His children. He rears, nourishes, provides for and is kind to all. Why should we be unjust and unkind? This is the policy of God, the lights of which have shone throughout the world. His sun bestows its effulgence unsparingly upon all, His clouds send down rain without distinction or favor, His breezes refresh the whole earth. It is evident that humankind without exception is sheltered beneath His mercy and protection. Some are imperfect; they must be perfected. The ignorant must be taught, the sick healed, the sleepers awakened. The child must not be oppressed or censured because it is undeveloped; it must be patiently trained. The sick must not be neglected because they are ailing; nay, rather, we must have compassion upon them and bring them healing. Briefly; the old conditions of animosity, bigotry and hatred between the religious systems must be dispelled and the new conditions of love, agreement and spiritual brotherhood be established among them.