§ 13.

  For he having been throroughly moved with religious piety and singular devotion, by which he was influenced in Saint Thomas of Aquinas' regard, the honor of his Order and the ornament of the Catholic Church, desiring in the same manner to addorn the same Saint with suitable honors on account of his most outstanding merits in the Catholic Church, besides these ordered and decreed this, that his feast day be forever celebrated each year as a rite of double office according to the likeness of the four holy Doctors of the Church; which equal honor We indeed estimate should be alloted to St. Bonaventure, an exceptional Doctor, since among these such a fine conjuction and similitude of virtues, holiness, doctrine, and merits intervenes. For these "are the two olive trees and two candlesticks" (Apoc. 11: 4) lighting the house of God, who both with the fat of charity and the light of science entirely illumine the whole Church; these two came forth by the singular providence of God at the same time as two stars rising up from the brightest families of regular Orders, which have always stood ready as things most useful to holy Church to defend the catholic religion, and to undertake all labors and dangers for the orthodox faith, from which, as from a fertile and well cultivated soil, daily by the grace of God fecund and fruitful plants are procreated, by this is meant those men outstanding in doctrine and sanctity, who energetically conduct the strong and faithful work of the bark of Peter, driven about by so many waves, and of the Roman Pontiff, holding (as he does) his key not without the greatest sollicitude. These two Saints, since they were contemporaries and given to the very same studies, students together, teachers at the same time, after they both had been summoned to the Council by Gregory X, the Supreme Pontiff, for similar reasons, honored, and in the pilgrimage of this life by fraternal charity, by spiritual familiarity, they have been very much conjoined in a fellowship of holy works, and at last migrating onward together with equal pace to the celestial fatherland, equally happy and glorious they enjoy to the full that sempiternal beatitude, where with the same affection of charity, as We piously believe, they pray for Us laboring in this vale of tears and implore the divine power of assistance, so that deservedly did the same Sixtus IV, acknowledging that these two Saints where thoroughly alike and almost twin brothers in Christ, establish, that Saint Bonaventure and St. Thomas must be adorned with a like perogative of veneration and honor.