4405. The reason why the sense of sight corresponds to the affection of understanding and being wise, is that the sight of the body corresponds precisely to the sight of its spirit, thus to the understanding. For there are two lights, one which is of the world from the sun, the other which is of heaven from the Lord. In the light of the world there is no intelligence, but there is intelligence in the light of heaven. Hence insofar as those things with man which are of the light of the world are illumined by those which are of the light of heaven, thus insofar as these two classes of things correspond to each other, so far the man understands and is wise.