When teaching among the masses, the friends should be careful not to emphasize the charitable and humanitarian aspects of the Faith as a means to win recruits. Experience has shown that when facilities such as schools, dispensaries, hospitals, or even clothes and food are offered to the people being taught, many complications arise. The prime motive should always be the response of man to God's message, and the recognition of His Messenger. Those who declare themselves as Bahá'ís should become enchanted with the beauty of the Teachings; and touched by the love of Bahá'u'lláh. The declarants need not know all the proofs, history, laws, and principles of the Faith, but in the process of declaring themselves they must, in addition to catching the spark of faith, become basically informed about the Central Figures of the Faith, as well as the existence of laws they must follow and an administration they must obey. (From a letter dated 13 July 1964 written by the Universal House of Justice to all National Spiritual Assemblies; The Compilation of Compilations vol II, Teaching the Masses)