181. Since there are degrees of love and wisdom, there are also degrees of heat and light. By heat and light are meant spiritual heat and light, such as angels in the heavens have, and such as men have as to the interiors of their minds; for men have a heat of love similar to that of the angels, and a similar light of wisdom. In the heavens, such and so much love as the angels have, such and so much is their heat; and the same is true of their light as compared with their wisdom; the reason is, that with them love is in the heat, and wisdom in the light (as was shown above). It is the same with men on earth, with the difference, however, that angels feel that heat and see that light, but men do not, because they are in natural heat and light; and while they are in the natural heat and light spiritual heat is not felt except by a certain enjoyment of love, and spiritual light is not seen except by a perception of truth. Now since man, so long as he is in natural heat and light, knows nothing of the spiritual heat and light within him, and since knowledge of these can be obtained only through experience from the spiritual world, the heat and light in which the angels and their heavens are, shall here be especially spoken of. From this and from no other source can enlightenment on this subject be had. 182. But degrees of spiritual heat cannot be described from experience, because love, to which spiritual heat corresponds, does not come thus under ideas of thought; but degrees of spiritual light can be described, because light pertains to thought, and therefore comes under ideas of thought. Yet degrees of spiritual heat can be comprehended by their relation to the degrees of light, for the two are in like degree. With respect then to spiritual light in which angels are, it has been granted me to see it with my eyes. With angels of the higher heavens, the light is so glistening white as to be indescribable, even by comparison with the shining whiteness of snow, and so glowing as to be indescribable even by comparison with the beams of this world's sun. In a word, that light exceeds a thousand times the noonday light upon earth. But the light with angels of the lower heavens can be described in a measure by comparisons, although it still exceeds the most intense light of our world. The light of angels of the higher heavens is indescribable, because their light makes one with their wisdom; and because their wisdom, compared to the wisdom of men, is ineffable, thus also is their light. From these few things it can be seen that there must be degrees of light; and because wisdom and love are of like degrees, it follows that there must be like degrees of heat.