At the transfiguration, the apostles saw our Saviour’s face shining as the sun, and his raiment white as light, also a lucid cloud or body of light, out of which the voice came; which visible light and splendor was, not many centuries ago, maintained by the Greek church, to have been divine, and uncreated, and the very glory of God: as may be seen in the history wrote by the emperor John Cantacuzene.George Berkeley, Siris 187.
Remarkable to see this from Berkeley in an extended reflection on the metaphysics of light. (See this article for more.) Recalls this passage from Maximus the Confessor:
The unspeakable and prodigious fire hidden in the essence of things, as in the bush, is the fire of divine love and the dazzling brilliance of His beauty inside every thing, . . . a shining forth, an epiphany, of the mysterious depths of being.Cited in Paul Evdokimov, The Art of the Icon: A Theology of Beauty (Pasadena, CA: Oakwood Publications, 2011) with footnote 25 pointing to Ambigua ad Iohannem, p. 9, paragraph 1148C, translated by Constas 2014 and Jeauneau 1988 (Latin translation by John Scottus Eriugena).