Dionysius of Alexandria

That man always inclines earthward, he means, and has the ruling faculty darkened. It is true, indeed, that we men have all of us our eyes in our head, if we speak of the mere disposition of the body. But he speaks here of the eyes of the mind. For as the eyes of the swine do not turn naturally up towards heaven, just because it is made by nature to have an inclination toward the belly; so the mind of the man who has once been enervated by pleasures is not easily diverted from the tendency thus assumed, because he has not "respect unto all the commandments of the Lord." Again: Christ is the head of the Church. And they, therefore, are the wise who walk in His way; for He Himself has said, "I am the way." On this account, then, it becomes the wise man always to keep the eyes of his mind directed toward Christ Himself, in order that he may do nothing out of measure, neither being lifted up in heart in the time of prosperity, nor becoming negligent in the day of adversity: "for His judgments are a great deep," as you will learn more exactly from what is to follow.