What doth it profit thee to enter into deep discussions concerning the Holy Trinity, if thou lack humility, and be thus displeasing to the Trinity? For verily it is not deep words that make a man holy and upright; it is a good life which maketh a man dear to God. I had rather feel contrition than be skillful in the definition thereof. If thou knewest the whole Bible, and the sayings of all the philosophers, what should this profit thee without the love and grace of God?

Thomas à Kempis