Angels are spirits, but it is not because they are spirits that they are angels. They become angels when they are sent. For the name angel refers to their office, not their nature. You ask the name of this nature, it is spirit; you ask its office, it is that of an Angel, which is a messenger.
Saint AugustineDo you know who the upright of heart are? They are those who wish what God wishes. Therefore, do not try to twist God's will to you own but correct your will to that of God. The will of God is a rule of conduct. By it you have the means of being converted and of correcting your evil ways.
Saint AugustineIn matters that are so obscure and far beyond our vision, we find in Holy Scripture passages which can be interpreted in very different ways without prejudice to the faith we have received. In such cases, we should not rush in headlong and so firmly take our stand on one side that, if further progress in the search for truth justly undermines this position, we too fall with it.
Saint AugustineWe count on God's mercy for our past mistakes, on God's love for our present needs, on God's sovereignty for our future.
Saint AugustineThe Church even now is the kingdom of Christ and the kingdom of heaven. Accordingly, even now His saints reign with Him, though otherwise than as they shall reign hereafter; and yet, though the tares grow in the Church along with the wheat, they do not reign with Him. For they reign with Him who do what the apostle says, 'If you are risen with Christ, mind the things which are above, where Christ sits at the right hand of God. Seek those things which are above, not the things which are on the earth'.
Saint Augustine