And for centuries now on the feast of Corpus Christi, within every Catholic church is heard that heavenly hymn written by the hand of St. Thomas Aquinas. And while no one will ever know what inspiring prayer St. Bonaventure wrote, we do know one thing. While God is greatly glorified and pleased with the great work of St. Thomas Aquinas, He is equally glorified and pleased with the great humility of St. Bonaventure.
So when you hear the "Tantum Ergo" or the "O Salutaris Hostia," (excerpts from what St. Thomas wrote for the feast of Corpus Christi), remember the humble act performed by St. Bonaventure who desired that this feast be the most beneficial to the Catholic Church and give the greatest glory to God.