The Guardian feels that a sound knowledge of history, including religious history, and also of social and economic subjects, is of great help in teaching the Cause to intelligent people; as to what subjects within the Faith you should concentrate on he feels that the young Bahá'ís should gain a mastery of such books as the "Gleanings", "The Dawn-Breakers", "God Passes By", the "Iqán", "Some Answered Questions" and the more important Tablets. All aspects of the Faith should be deeply studied – and … they need to know more about the Administration. (From a letter dated 4 May 1946 written on behalf of Shoghi Effendi to an individual believer; The Compilation of Compilations, vol. III, Scholarship)