It was from the spirit of prayer that the saints derived all their lights and all their strength. This was the source of all the blessings which heaven through their intercession showered down on the world, and the means which they employed to communicate an angelical purity to their souls. “This spirit,” says a father of the Church,[2] “is nourished by retreat, which in some manner may be called the parent of purity.” This admirable transformation of our souls produced by prayer is to be attributed to God’s glory, which by prayer he makes to shine in the secret of our hearts. In fine, when all the avenues of our senses are closed against the creature, and that God dwells with us, and we with God; when freed from the tumult and distractions of the world we apply all our attention to interior things and consider ourselves such as we are, we then become capable of clearly contemplating the kingdom of God, established in us by that charity and ardent love which consumes all the rust of earthly affections. For the kingdom of heaven, or rather the Lord of heaven itself, is within us, as Jesus Christ himself assures us. SS. JULIUS AND AARON, MM. These saints were Britons, and seem to have taken, the one a Roman and the other a Hebrew name at their baptism. They glorified God by martyrdom at Caerleon upon Usk in Monmouthshire, in the persecution of Dioclesian, probably about the year 303. St Gildas,[3] St. Bede,[4] and others, speak of their triumph as having been most illustrious. Leland and Bale say, SS. Julius and Aaron had travelled to Rome, and “there applied themselves to the sacred studies.” Bede adds, “very many others of both sexes, by unheard-of tortures, attained to the crown of heavenly glory.” Giraldus Cambrensis informs us, that their bodies were honored at Caerleon in the year 1200, when he wrote. Each of these martyrs had a titular church in that city; that of St. Julius, belonged to a nunnery, and that of St. Aaron to a monastery of canons. See Godwin De Episc. Landav. Geoffrey of Monmouth, Giraldus Cambrensis, Leland, and Tanner, Bibl. Britan. p. 1. ST. THEOBALD OR THIBAULT, C.