Light is all things, and no thing. It is no thing because it is supernatural; it is all things because every good power and perfection of everything is from it. No joy or rejoicing in any creature but from the power and joy of light. No meekness, benevolence, or goodness, in angel, man, or any creature, but where light is the lord of its life. Life itself begins no sooner, rises no higher, has no other glory than as the light begins it and leads it on. Sounds have no softness, flowers and gums have no sweetness, plants and fruits have no growth but as the mystery of light opens itself in them. Whatever is delightful and ravishing, sublime and glorious, in spirits, minds, or bodies, either in heaven or on earth, is from the power of the supernatural light opening its endless wonders in them.
William Law: The Spirit of Love.