107 The subject is discussed in a number of places throughout _The Priceless Pearl_, _op. cit._ See particularly pages 79, 85, 90, 128 and 159. _ 108 Tablets of Bahá’u’lláh revealed after the Kitáb-i-Aqdas,_ _op. cit._, p. 69. 109 ‘Abdu’l-Bahá, _The Secret of Divine Civilization_, _op. cit._, pp. 96-97. 110 J. E. Esslemont, _Bahá’u’lláh and the New Era: An Introduction to the Bahá’í Faith_, 5th rev. ed. (Wilmette: Bahá’í Publishing Trust, 1998), p. 250. _ 111 Will and Testament of ‘Abdu’l-Bahá_, _op. cit._, p. 11. 112 Shoghi Effendi, _The World Order of Bahá’u’lláh,_ _op. cit._, p. 8. 113 Bahá’u’lláh, _The Kitáb-i-Aqdas_, _op. cit._, paragraph 83. 114 Bahá’u’lláh, _Epistle to the Son of the Wolf_ (Wilmette: Bahá’í Publishing Trust, 1988), p. 14. 115 Shoghi Effendi, _The World Order of Bahá’u’lláh,_ _op. cit._, pp. 43, 195. _ 116 ibid._, p. 24. _ 117 Tablets of Bahá’u’lláh revealed after the Kitáb-i-Aqdas,_ _op. cit._, pp. 66-67. 118 Shoghi Effendi, _The Advent of Divine Justice_, _op. cit._, p. 27. _ 119 The Establishment of the Universal House of Justice_, compiled by the Research Department of the Universal House of Justice (Oakham: Bahá’í Publishing Trust, 1984), p. 17. 120 Universal House of Justice_, Messages from the Universal House of Justice, 1963-1986: The Third Epoch of the Formative Age_, _op. cit._, p. 52. _ 121 ibid._, p. 104. _ 122 Bahá’í News_, no. 73, May 1933 (Wilmette: National Spiritual Assembly of the Bahá’ís of the United States), p. 7. 123 The Institute was created by the Universal House of Justice in 1998 as an agency of the Bahá’í International Community, reporting to the House of Justice through the Office of Public Information. Its mandate describes it as an agency “dedicated to researching both the spiritual and material underpinnings of human knowledge and the processes of social advancement.” 124 The Centre’s purpose is described as undertaking “research in a systematic manner on the Bahá’í Faith, including its religious culture, humanitarian spirit and religious ethics.” 125 Cited in _Star of the West_, vol. 13, no. 7 (October 1922), pp. 184-186. 126 ‘Abdu’l-Bahá, _Tablets of the Divine Plan_, _op. cit._, p. 54. 127 Beginning in approximately 1904, a learned Iranian believer known as Ṣadru’ṣ-Ṣudúr established the first teacher-training class for Bahá’í youth in Tehran with ‘Abdu’l-Bahá’s encouragement. The classes met daily, and the graduates, who had been trained in the beliefs of other religions as well as various aspects of the Bahá’í Faith, contributed greatly to the expansion and consolidation of the Cause in their native land.