July 6

Count Mastai-Ferretti, Bishop of Imola, the 254th pope since the inception of St. Peter’s primacy, who had been elevated to the apostolic throne two years after the Declaration of the Báb, and the duration of whose pontificate exceeded that of any of his predecessors, will be permanently remembered as the author of the Bull which declared the Immaculate Conception of the Blessed Virgin (1854), referred to in the Kitáb-i-Íqán, to be a doctrine of the Church, and as the promulgator of the new dogma of Papal Infallibility (1870). Authoritarian by nature, a poor statesman, disinclined to conciliation, determined to preserve all his authority, he, while he succeeded through his assumption of an ultramontane attitude in defining further his position and in reinforcing his spiritual authority, failed, in the end, to maintain that temporal rule which, for so many centuries, had been exercised by the heads of the Catholic Church. 
- Shoghi Effendi  (‘The Promised Day Is Come’)