" .... Shoghi Effendi hopes that you will exert all your effort to deepen your knowledge of the literature of the movement, until you become fully acquainted with its spirit and tenets. Unless you do obtain such a firm hold you will never be able to teach others and render real service to the promulgation of the Faith. Of special importance is the Book of the Íqán which explains the attitude of the Cause towards the prophets of God and their mission in the history of society. Besides this there is Some Answered Questions of the Master and the 'Dawn-Breakers' of Nabil. Every Bahá'í should master these books and be able to explain their contents to others. Besides their importance, they are interesting and most absorbing." ------------------------ (From a letter written on behalf of Shoghi Effendi to an individual believer, February 9, 1932) (Compilations, Lights of Guidance, p. 559)