"Let no one say 'I don't know what to love.' Let him love his brother, and love that love; after all, he knows the love he loves with better than the brother he loves. There now, he can already have God better known to him than his brother, certainly better known because more present, better known because more inward to him, better known because more sure. Embrace love which is God, and embrace God with love. This is the love which unites all the good angels and all the servants of God in a bond of holiness, conjoins us and them together, and subjoins us to itself. And the more we are cured of the tumor of pride, the fuller we are of love. And if a man is full of love, what is he full of but God?"
--Augustine, De Trinitate VIII.5.12