July 6

My purpose is this, that ere the expiration of a thousand years, no one has the right to utter a single word, even to claim the station of Guardianship. The Most Holy Book is the Book to which all peoples shall refer, and in it the Laws of God have been revealed. Laws not mentioned in the Book should be referred to the decision of the Universal House of Justice. There will be no grounds for difference ... Beware, beware lest anyone create a rift or stir up sedition. Should there be differences of opinion, the Supreme House of Justice would immediately resolve the problems. Whatever will be its decision, by majority vote, shall be the real truth, inasmuch as that House is under the protection, unerring guidance and care of the one true Lord. He shall guard it from error and will protect it under the wing of His sanctity and infallibility. He who opposes it is cast out and will eventually be of the defeated. 
- ‘Abdu’l-Baha  (Quoted by the Universal House of justice in a letter dated 9 March 1965; Messages from the Universal House of Justice 1963-1986’)