As to the Roman Breviary, the prayers consist, for the greatest part, of the psalms, and other parts of the holy scriptures, to which the same respect is due which we pay to the divine books. The short lessons from the Homilies, or other works of approved fathers, especially those fathers who are mentioned by Gelasius I. in his decree, carry with them the authority of their venerable authors. As it was the custom in the primitive ages to read, in the churches or assemblies, the acts of the most illustrious martyrs, of which frequent mention is made in those of St. Polycarp, &c., some short histories of the martyrs and other saints have been always inserted in the Breviary, to which only an historical assent is due, whence they have been sometimes altered and amended. These are chiefly such as are judged authentic and probable by the cardinals Baronius and Bellarmin, who revised those lessons, in the last correction under Clement VIII. Gavant, who was himself one of the revisers of the Breviary, and secretary to the congregation, writes thus, (in Breviar. sect. 5, c. 12, n. 15, p. 18:) 'The second lessons from the histories of the saints were revised by Bellarmin and Baronius, who rejected what could be justly called in question: in which difficult task they thought it best to restore the truth of history with the least change possible, and to retain those things which had a certain degree of probability, and had the authority of some grave voucher, though the contrary sentiment had perhaps more patrons.' In computing the years of the popes, the chronology of Baronius was judged the most exact, and retained. Historical facts, nowise revealed or contained in scripture, cannot be made an object of divine faith. If edifying histories are inserted in the church-office, they stand upon their own credit. Such only ought to be chosen which are esteemed authentic. This rule has been always followed when any were compiled. If the compilers are found afterwards to have been mistaken, it is nowhere forbid to correct them.[1] This has been often done by the order of several popes." Footnotes: 1. Nimia profecto almplicitate peccant qui scandalizantur quoties audiunt aliquid ex jam olim creditia et juxta breviarii prescriptum hodiedum recitandis, in disputationem adduci.--_Diss. Ballandic{e}._ vol. 2, p. 140.