Maximus the Confessor
Spiritual Letters / 7th century
We know God not in his essence, but through the magnificence of his Creation and the action of his Providence, which present us, as in a mirror, the reflection of his goodness, his wisdom and his infinite power.
Reference
Saint Maxime le Confesseur. Lettres spirituelles, nº 78, L’Âge d’Homme, Lausanne, 2005, p. 223.