The whole earth is a living icon of the face of God. ... I do not worship matter. I worship the Creator of matter who became matter for my sake, who willed to take His abode in matter, who worked out my salvation through matter. Never will I cease honoring the matter which wrought my salvation! I honor it, but not as God. Because of this I salute all remaining matter with reverence, because God has filled it with his grace and power. Through it my salvation has come to me.
John of DamascusBoth angels and demons are ignorant of the future, yet they make predictions. The angels do so when God reveals the future to them and commands them to prophesy, and what they prophesy comes to pass. Demons also make predictions, but these are only guesses based on what they see from afar.
John of DamascusHe who does not believe according to the tradition of the Catholic Church is an unbeliever.
John of DamascusDevotion to you, O Blessed Virgin, is a means of salvation which God gives to those whom he wishes to save.
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 Damascus