April 5

By the sublimity and serenity of their faith, by the steadiness and clarity of their vision, the incorruptibility of their character, the rigor of their discipline, the sanctity of their morals, and the unique example of their community life, they can and indeed must in a world polluted with its incurable corruptions, paralyzed by its haunting fears, torn by its devastating hatreds, and languishing under the weight of its appalling miseries demonstrate the validity of their claim to be regarded as the sole repository of that grace upon whose operation must depend the complete deliverance, the fundamental reorganization and the supreme felicity of all mankind. 
(Shoghi Effendi, from a letter dated July 28, 1939; ‘Messages to America’)