January 4

Divorced from the social, humanitarian, educational, and scientific pursuits centring around the Dependencies of the Mashriqu'l-Adhkar, Bahá'í worship, however exalted in its conception, however passionate in fervour ... cannot afford lasting satisfaction and benefit to the worshipper himself, much less to humanity in general, unless and until translated and transfused into that dynamic and disinterested service to the cause of humanity which it is the supreme privilege of the Dependencies of the Mashriqu'l-Adhkar to facilitate and promote. 
(Shoghi Effendi, from a letter dated 25 October 1929 to the Bahá'ís of the United States and Canada, quoted in a letter from the Universal House of Justice dated 18 December 2014 to the Bahá'ís in Iran; also in ‘The Baha’i World 1973-1976)