96. Anyone who pays attention to the thoughts of his mind can know that spiritual light is absolutely distinct from natural light. For when the mind thinks, it sees its objects in light, and those who think spiritually see truths, and this at midnight as well as in the daytime. Because of this also light is predicated of the understanding and is said to see. For one sometimes says of matters about which another is speaking, that he sees that it is so, that is, that he understands. The understanding because it is spiritual, cannot see thus from natural light, for natural light does not adhere but passes away with the sun. From this it is clear that the understanding possesses a light other than that of the eye, and that this light is from another source.