Angels have an understanding and a will, and they have a face and a body. They also have the interior things of the understanding and will as well as of the face and body. The interiors of the understanding and the will are the things belonging to their interior affection and thought. The interiors of the face are the brains, while the interiors of the body are the viscera, the chief of which are the heart and lungs. In a word, the angels have all the things in general and particular which men on earth have. It is from these things that angels are men. Outward form apart from these internals does not make them men, but external form together with these, or rather from these [do]. Otherwise they would be merely images of men, in which there is no life, because within there is no form of life.