I found an interesting statement by St. Basil (330-379) about the operation of the mind. I liked how he employed the interrelatedness of beauty, goodness and truth.
The mind is a wonderful thing, and therein we possess that which is after the image of the Creator. And the operation of the mind is wonderful; in that, in its perpetual motion, it frequently forms imaginations about things non-existent as though they were existent, and is frequently carried straight to the truth. But there are in it two faculties; in accordance with the view of us who believe in God, the one evil, that of the dæmons which draws us on to their own apostasy; and the divine and the good, which brings us to the likeness of God. When, therefore, the mind remains alone and unaided, it contemplates small things, commensurate with itself. When it yields to those who deceive it, it nullifies its proper judgment, and is concerned with monstrous fancies. Then it considers wood to be no longer wood, but a god; then it looks on gold no longer as money, but as an object of worship. If on the other hand it assents to its diviner part, and accepts the boons of the Spirit, then, so air as its nature admits, it becomes perceptive of the divine. There are, as it were, three conditions of life, and three operations of the mind. Our ways may be wicked, and the movements of our mind wicked; such as adulteries, thefts, idolatries, slanders, strife, passion, sedition, vain-glory, and all that the apostle Paul enumerates among the works of the flesh. Or the soul’s operation is, as it were, in a mean, and has nothing about it either damnable or laudable, as the perception of such mechanical crafts as we commonly speak of as indifferent, and, of their own character, inclining neither towards virtue nor towards vice. For what vice is there in the craft of the helmsman or the physician? Neither are these operations in themselves virtues, but they incline in one direction or the other in accordance with the will of those who use them. But the mind which is impregnated with the Godhead of the Spirit is at once capable of viewing great objects; it beholds the divine beauty, though only so far as grace imparts and its nature receives.
 St. Basil. “To Amphilochius in reply to certain questions” in A Select Library of the Nicene and Post-Nicene Fathers of the Christian Church, Second Series, Volume VIII: St. Basil: Letters and Select Works ( ed. Philip Schaff and Henry Wace;New York: Christian Literature Company, 1895), 273.