The love of God, unutterable and perfect, flows into a pure soul the way light rushes into a transparent object. The more love that it finds, the more it gives itself: so that, as we grow clear and open, the more complete the joy of heaven is. And the more souls who resonate together, the greater the intensity of their love, and, mirror-like, each soul reflects the other.
–Dante (c. 1265 – 1321)