An angel is an intelligent essence, always in motion. It has free will, is incorporeal, serves God, and has been bestowed with immortality. Only the Creator understands its true nature.
John of DamascusThe saints must be honored as friends of Christ and children and heirs of God. Let us carefully observe the manner of life of all the apostles, martyrs, ascetics, and just men who announced the coming of the Lord. And let us emulate their faith, charity, hope, zeal, life, patience under suffering, and perseverance unto death so that we may also share their crowns of glory.
John of DamascusHe who does not believe according to the tradition of the Catholic Church is an unbeliever.
John of DamascusIf the Word of God is living and powerful, and if the Lord does all things whatsoever he wills; if he said, "Let there be light", and it happened; if he said, "let there be a firmament", and it happened; ...if finally the Word of God himself willingly became man and made flesh for himself out of the most pure and undefiled blood of the holy and ever Virgin, why should he not be capable of making bread his Body and wine and water his Blood?... God said, "This is my Body", and "This is my Blood."
John of DamascusGluttony should be destroyed by self-control; unchastity by desire for God and longing for the blessings held in store; avarice by compassion for the poor; anger by goodwill and love for all men; worldly dejection by spiritual joy; listlessness by patience, perseverance and offering thanks to God; self-esteem by doing good in secret and by praying constantly with a contrite heart; and pride by not judging or despising anyone in the manner of the boastful Pharisee (cf. Lk. 18:11-12), and by considering oneself the least of all men.
John of Damascus