I am however assured and sustained by the conviction, never dimmed in my mind, that whatsoever comes to pass in the Cause of God, however disquieting in its immediate effects, is fraught with infinite Wisdom and tends ultimately to promote its interests in the world. Indeed, our experiences of the distant past, as well as of recent events, are too numerous and varied to permit of any misgiving or doubt as to the truth of this basic principle -- a principle which throughout the vicissitudes of our sacred mission in this world we must never disregard or forget. (Shoghi Effendi, from a letter dated 23 December 1922 to the National Spiritual Assembly of the United States and Canada, published in ‘Bahá'í Administration: Selected Messages 1922-1932’ ; The Compilation of Compilations, vol. II, Opposition)