392. These two motions-cardiac and pulmonary-exist and continue because the whole angelic heaven in general and in particular is in these two motions of life; and this again is because the Lord pours them forth from the Sun where He is, and which is from Him; for that Sun acts from the Lord upon these two motions. It is clear that they have no other origin since all the things of heaven and of the world depend on the Lord through that Sun in such a union of form as may be compared to chain work from the first link to the last, also since the life of love and wisdom is from Him, and all the forces of the universe are from life. It follows that the variation of these motions is in accordance with the reception of love and wisdom.