Again, the Empyrean Heaven, because of its Peace, bears a similitude to the Divine Science, which is full of all Peace; which endures no conflict of opinion or of sophistical arguments, on account of the most excellent certainty of its subject, which is God. And of this He Himself speaks to His disciples: “My peace I give to you: My peace I leave unto you,” giving and leaving to them His doctrine, which is this Science whereof I speak.
Solomon says of this Science: “Sixty are the queens, and eighty the friendly concubines; and youthful virgins without number; but one is my dove and my perfect one.” All the Sciences he terms queens, and friends, and virgins; and he calls this one dove, because it is without blemish of strife; and he calls this one perfect, because it causes us to see perfectly the Truth in which our Soul finds Peace.
And therefore the comparison of the Heavens to the Sciences having been thus reasoned out, it is easy to see that by the Third Heaven I mean Rhetoric, which has been likened unto the Third Heaven, as appears above.
By the similitudes spoken of it is possible to see who these Movers are to whom I speak; what are the Movers of that Heaven; even as Boethius and Tullius, who by the sweetness of their speech sent me, as has before been stated, to the Love, which is the study of that most gentle Lady, Philosophy, by the rays of their star, which is the written word of that fair one. Therefore in each Science the written word is a star full of light, which that Science reveals And, this being made manifest, it is easy to see the true meaning of the first verse of the purposed Poem