60. That into such a form and image celestial and spiritual things are arranged and joined cannot be seen by those who have no right idea of spiritual and heavenly things. Such think that the earthy and material things of which man's outmost nature is composed are what makes the man; and that apart from these man is not a man. But let them know that it is not from these that man is a man, but from his ability to understand what is true and to will what is good. Such understanding and willing are the spiritual and celestial things of which man is made. Moreover, it is known that everyone's quality is determined by the quality of his understanding and will; and it can also be known that his earthly body is formed to serve the understanding and the will in the world, and to skillfully accomplish their uses in the outmost sphere of nature. For this reason the body by itself can do nothing, but is moved always in entire subservience to the bidding of the understanding and will, even to the extent that whatever a man thinks he speaks with his tongue and lips, and whatever he wills he does with his body and limbs, and thus the understanding and the will are what act, while the body by itself does nothing. Evidently, then, the things of the understanding and will are what make man; and as these act into the minutest particulars of the body, as what is internal into what is external, they must be in a like form, and on this account man is called an internal or spiritual man. Heaven is such a man in its greatest and most perfect form.