15. When the spirits of Mercury come to other societies, they explore and collect from them what they know, and then they depart; for such communication is granted amongst spirits and especially amongst angels, that when they are in a society, if they are accepted and loved, all things which they know are communicated.# # That in the heavens there is given a communication of all goods, inasmuch as it is the property of heavenly love to communicate all its possessions with others; and that hence the angels derive wisdom and happiness (n. 549, 550, 1390, 1391, 1399, 10,130, 10,723).