As the world attracts us with its appearance, and abundance and variety, it is not easy to turn away from it unless in the beauty of things visible the Creator rather than the creature is loved; for, when He says, 'you shall love the Lord your God from all your heart, and from all your mind, and from all your strength' (Mt. 22:37), He wishes us in nothing to loosen ourselves from the bonds of His love. And when He links the love of our neighbor also to this command, He enjoins on us the imitation of His own goodness, that we should love what He loves and do what He does.
Pope Leo II have neither permitted, nor shall I permit, the things which have been settled by the holy fathers to be violated by any innovation.
Pope Leo IThe faith by which we live shall never vary in any age . . . for one is the faith which sanctifies the Just of all ages.
Pope Leo ILet no one be ashamed of the cross by which Christ has redeemed the world. None of us must be afraid to suffer for the sake of justice or doubt the fulfillment of the promises, for it is through toil that we come to rest and through death that we pass to life.
Pope Leo IHe that sees another in error and endeavors not to correct it, testifies himself to be in error.
Pope Leo IIt is not enough to know the Son of God in the Father's nature only, unless we acknowledge Him in what is ours without withdrawal of what is His own. For that self-emptying, which He underwent for man's restoration, was the dispensation of compassion, not the loss of power. For, though by the eternal purpose of God there was 'no other name under heaven given to men whereby they must be saved' (Acts 4:12), the Invisible made His substance visible, the Intemporal temporal, the Impassable passable: not that power might sink into weakness, but that weakness might pass into indestructible power.
Pope Leo I