916. Now such spirits, and others also, since they are organs, relate to the same organs in the human body, but the fluids of the internal organs reflect the elements in us such as our reasonings, fantasies, and the like, which behave in the same way, activating us and making our life. However, there is a life deeper than those fluids, for they have vital substances stored up within them, which are liberated whenever they are to serve some use. 1748, 21 February.