Enter into yourself, therefore, and observe that your soul loves itself most fervently; that it could not love itself unless it knew itself, nor know itself unless it summoned itself to conscious memory, for we do not grasp a thing with our understanding unless it is present in our memory. Hence you can observe, not with the bodily eye, but with the eye of the mind, that your soul has three powers. Consider, therefore, the activities of these three powers and their relationships, and you will be able to see God through yourself as through an image; and this indeed is to see God through a mirror in an obscure manner.
[Bonaventure, Itinerarium Mentis in Deum 3, Boehner, tr. The Franciscan Institute (St. Bonaventure, NY: 1956) 63.]
