That spiritual and angelic societies consist of those who are of one kind, having its own species, is clear from their likeness of affection. For in the world, like persons associate as if of their own will, but in the world of spirits and in heaven, this happens by arrangement of the Lord. And because societies there are not put together as they are on earth, out of necessity, and having a deficiency of people who are alike, therefore those [angels and spirits] who are alike as to feelings and convictions are associated by arrangement of the Lord.