101. That the heat and light, that is, the spiritual going forth from the Lord as a Sun, make one, may be illustrated by the heat and light which go forth from the sun of the natural world. These two also make one in their going out from that sun. That they do not make one on the earth is due not to that sun but to the earth. For the earth revolves daily round its axis, and once a year makes a circuit following the ecliptic. From this the appearance is that heat and light do not make one, for in the middle of summer there is more heat than light, and in the middle of winter there is more light than heat. It is the same in the spiritual world. There, however, there is no revolving or circuiting earth, but the angels turn themselves more towards the Lord or less towards Him. Those who turn more receive more from heat and less from light, while those who turn less towards the Lord receive more from light and less from heat. This is the reason that the heavens which consist of angels are distinguished into two kingdoms, one of which is called celestial and the other spiritual. The celestial angels receive more from heat and the spiritual angels more from light. In accordance with their reception of heat and light, so the lands on which they dwell appear. The correspondence is complete if only in place of the motion of the earth there is substituted the change of state of the angels.