191. From these illustrations one may draw conclusions in regard to such things as are not visible to the eyes, because the case is the same with them. It is the same, for example, with the organic substances which constitute the vessels and seats of thoughts and affections in the brain. It is the same with the atmospheres, with heat and light, and with love and wisdom. For the atmospheres are vehicles of heat and light, and heat and light are vehicles of love and wisdom. Consequently, as there are degrees of atmospheres, there are also like degrees of heat and light, and like degrees of love and wisdom. For the relationship between the latter degrees is the same as that between the former.