10185. And its walls round about. That this signifies the interiors, is evident from the signification of "walls," or "sides," as being the interiors, for as the "roof" signifies the inmost, the "walls" beneath signify the interiors; by the interiors are meant the things beneath the inmost and above the ultimate ones, thus the middle things. That the "walls" signify the interiors is because the sides and breast with man signify the interiors, for all the representatives in nature bear relation to the human form, and have a signification in accordance with this relation (see n. 9496); as for instance a house; its highest part called the roof signifies the like as the head with a man; its more interior things which are below the highest, signify the like as the breast and sides; and its foundation, the like as the feet and soles of the feet. That this is so, is because the universal heaven bears relation to a man, and from this there is an influx into universal nature, for the natural world comes forth and subsists from the spiritual world. When the spiritual world is spoken of, there is meant the Divine of the Lord which is there.
 That all things in nature bear relation to the human form, is also evident from all the things in the vegetable kingdom, in which kingdom all things are clothed with leaves, bearing flowers before they bring forth fruits, while fruits are the ultimate ends for the sake of which are the prior things, and to which they all look. For the leaves in that kingdom bear relation to the lungs, and are as it were in the place of the respiration, because by their means the sap is drawn up, and therefore a tree stripped of its leaves bears no fruit. From this also it is that "leaves" in the Word signify the truths of faith (n. 885), for in like manner by their means is drawn up the living power whereby good is formed.
 The blossoming before the fruit corresponds to the state of that age with man when the conjugial inclination enters minds and gladdens them, thus when truth is being conjoined with good. But the fruit corresponds to the good itself, which, insofar as it ripens like fruit, puts itself forth into works. From this it is that "fruits" in the Word signify the works of charity; and the blossoming before the fruit is compared to the voice and joy of the bride and bridegroom; and so in all other things.
 Therefore one who is able to reflect wisely will very clearly notice that the heavenly paradise is represented in the earthly one, and that from this all things in nature bear relation to such as are in the spiritual world. And one who is able to draw further conclusions will perceive that nature does not subsist from itself, but through influx from heaven, that is, from the Divine in heaven; insomuch that if the communication were taken away, all things of the earth would fall down to nothing. That this is so the simple apprehend, but not the wise of the world, for the reason that the simple attribute all these things to the Divine, but the wise of the world attribute them to nature.