4526. As to what further regards the correspondence of the sight of the eye, treated of at the end of the foregoing chapter, be it known that its correspondence is with the things which are of the understanding; for the understanding is the internal sight, and this internal sight is in a light which is above the light of this world. The reason why man is able to acquire intelligence by means of the things which appear before him in the light of this world, is that a higher light (that is, the light of heaven) flows into the objects which are of the light of the world, and causes them to appear representatively and correspondently; for the light which is above the light of the world is a light that proceeds from the Lord, who illumines the universal heaven. The very intelligence and wisdom that are from the Lord appear there as light. It is this light which produces man's understanding or internal sight, and when it inflows through the understanding into the objects of this world's light, it causes them to appear representatively and correspondently, thus intellectually. And as the eyesight which is in the natural world corresponds to the sight of the understanding which is in the spiritual world, it corresponds to the truths of faith, because these belong to genuine understanding; for truths produce all man's understanding, inasmuch as all his thought is employed in deciding that a thing is so, or is not so; that is, that it is true, or is not true. (That the sight of the eye corresponds to the truths and goods of faith, may be seen above, n. 4410.)