269. That this is true of heaven as a whole may be concluded from what is similar in each society of heaven; for each society is a heaven in a less form, and is also like a man (that it is so, may be seen in the work on Heaven and Hell, n. 41-87). In each society of heaven those who are at the center have a like relation to the heart and lungs, and with them there is the greatest light. The light itself with the consequent perception of truth spreads out from that center towards the circumference, in every direction, thus to all who are in the society, and constitutes their spiritual life. It has been shown that when those who were at the center and who constituted the province of the heart and lungs, and with whom there was the most light, were taken away, those who were round about them had their understandings obscured, and had so feeble a perception of truth that they were grieved; but as soon as the others returned light appeared, and their perception of truth was the same as before. This may be compared to the heat and light of the sun of the world, which causes trees and plants to vegetate, even those out of their direct rays or under clouds, provided the sun is above the horizon. So is it with the light and heat of heaven from the Lord as a sun there, that light being in its essence Divine truth, the source of all wisdom and intelligence to angels and men. It is therefore said of the Word: