316. In the forms of uses of the animal kingdom there is a similar image of creation, in that the animal body, which is the outmost thereof, is formed by a seed deposited in a womb or an ovum, and this body, when mature, brings forth new seed. This progression is similar to the progression of the forms of uses of the vegetable kingdom: seeds are the beginnings; the womb or the ovum is like the ground; the state before birth is like the state of the seed in the ground while it takes root; the state after birth until the animal becomes prolific is like the growth of a tree until it reaches its state of fruit-bearing. From this parallelism it is plain that there is a likeness of creation in the forms of animals as well as in the forms of plants, in that there is a progression from firsts to outmosts, and from outmosts to firsts. A like image of creation exists in every single thing there is in man; for there is a like progression of love through wisdom into uses, consequently a like progression of the will through the understanding into acts, and of charity through faith into deeds. Will and understanding, also charity and faith, are the firsts as their source; acts and deeds are the outmosts; from these, by means of the enjoyments of uses, a return is made to their firsts, which, as was said, are the will and understanding, or charity and faith. That the return is effected by means of the enjoyments of uses is very evident from the enjoyments felt in those acts and deeds which are from any love, in that they flow back to the first of the love from which they spring and that thereby conjunction is effected. The enjoyments of acts and deeds are what are called the enjoyments of uses. A like progression from firsts to outmosts, and from outmosts to firsts, is exhibited in the forms most purely organic of affections and thoughts in man. In his brains there are those star-like forms called the cineritious substances; out of these go forth fibers through the medullary substance by the neck into the body; passing through to the outmosts of the body, and from outmosts returning to their firsts. This return of fibers to their firsts is made through the blood vessels. There is a like progression of all affections and thoughts, which are changes and variations of state of those forms or substances, for the fibers issuing out of those forms or substances are comparatively like the atmospheres from the spiritual sun, which are containants of heat and light; while bodily acts are like the things produced from the lands by means of atmospheres, the enjoyments of their uses returning to the source from which they sprang. But that the progression of these is such, and that within this progression there is an image of creation, can hardly be comprehended fully by the understanding, both because thousands and myriads of forces operating in act appear as one, and because the enjoyments of uses do not appear as ideas in the thought, but only affect without distinct perception. On this subject see what has been declared and explained above, as follows: The uses of all created things ascend by degrees of height to man, and through man to God the Creator from whom they are (n. 65-68). The end of creation takes form in outmosts, which end is that all things may return to the Creator and that there may be conjunction (n. 167-172). But these things will appear in still clearer light in the following Part, where the correspondence of the will and understanding with the heart and lungs will be treated of.