91. From the human face it can be seen what correspondence is. In a face that has not been taught to dissemble, all the affections of the mind present themselves to view in a natural form, as in their type. This is why the face is called the index of the mind; that is, it is man's spiritual world presented in his natural world. So, too, what pertains to the understanding is presented in speech, and what pertains to the will is presented in the movements of the body. So whatever effects are produced in the body, whether in the face, in speech, or in bodily movements, are called correspondences.
92. All this shows also what the internal man is and what the external, namely, that the internal is what is called the spiritual man, and the external what is called the natural man; also that the one is distinct from the other as heaven is from the world; also that all things that take place and come forth in the external or natural man take place and come forth from the internal or spiritual man.
93. This much has been said about the correspondence of man's internal or spiritual with his external or natural; now the correspondence of the whole heaven with everything pertaining to man shall be treated of.
94. It has been shown that the entire heaven reflects a single man, and that it is in image a man and is therefore called the Greatest Man. It has also been shown that the angelic societies, of which heaven consists, are therefore arranged as the members, organs, and viscera are in man, that is, some are in the head, some in the breast, some in the arms, and some in each of their particulars (see above, n. 59-72); consequently the societies in any member there correspond to the like member in man; those in the head corresponding to the head in man, those in the breast to the breast in man, those in the arms to the arms in man; and so with all the rest. It is from this correspondence that man has permanent existence, for from heaven alone does man have permanent existence.
95. That heaven is divided into two kingdoms, one called the celestial kingdom and the other the spiritual kingdom, may be seen above in its own chapter. The celestial kingdom corresponds in general to the heart and all things of the heart in the whole body, and the spiritual kingdom to the lungs and to all things of the lungs in the whole body. Likewise in man heart and lungs form two kingdoms, the heart ruling there through the arteries and veins, and the lungs through the tendinous and motor fibers, both together in every exertion and movement. So in every man, in his spiritual world, which is called his spiritual man, there are two kingdoms, one of the will and the other of the understanding, the will ruling through affections for good, and the understanding through affections for truth; and these kingdoms correspond to the kingdoms of the heart and of the lungs in the body. It is the same in the heavens; the celestial kingdom is the voluntary part of heaven, and in it good of love reigns; the spiritual kingdom is the intellectual part of heaven, and in it truth reigns. These are what correspond to the functions of the heart and lungs in man. It is on account of this correspondence that in the Word the "heart" signifies the will and also good of love, and the "breath" of the lungs signifies the understanding and the truth of faith. For the same reason affections are ascribed to the heart, although they are neither in it nor from it.{1}
{Footnote 1} The correspondence of the heart and lungs with the Greatest Man, which is heaven, from experience (n. 3883-3896), The heart corresponds to those in the celestial kingdom, and the lungs to those in the spiritual kingdom (n. 3885-3887). There is in heaven a pulse like that of the heart, and a respiration like that of the lungs but interior (n. 3884, 3885, 3887). There the pulse of the heart varies in conformity to states of love, and the respiration in conformity to states of charity and faith (n. 3886, 3887, 3889). In the Word the "heart" means the will, and "from the heart" means from the will (n. 2930, 7542, 8910, 9113, 10336). In the Word the "heart" also signifies love, and "from the heart" means from love (7542, 9050, 10336).
96. The correspondence of the two kingdoms of heaven with the heart and lungs is the general correspondence of heaven with man. There is a less general correspondence with each one of his members, organs, and viscera; and what this is shall also be explained. In the Greatest Man, which is heaven, those that are in the head excel all others in every good, being in love, peace, innocence, wisdom, intelligence, and consequent joy and happiness. These flow into the head of man and the things belonging to the head and corresponding thereto. In the Greatest Man, or heaven, those that are in the breast are in the good of charity and of faith, and these flow into the breast of man and correspond to it. In the Greatest Man, or heaven, those that are in the loins and the organs devoted to generation are in marriage love. Those in the feet are in the lowest good of heaven, which is called spiritual natural good. Those in the arms and hands are in the power of truth from good. Those that are in the eyes are in understanding; those in the ears are in attention and obedience; those in the nostrils are in perception; those in the mouth and tongue are in the ability to converse from understanding and perception; those in the kidneys are in truths searching, separating, and correcting; those in the liver, pancreas, and spleen are in various purifications of good and truth; and so with the rest. All these flow into the like things of man and correspond to them. This inflow of heaven is into the functions and uses of the bodily members; and the uses, since they are from the spiritual world, take on a form by means of such things as are in the natural world, and thus present themselves in effect. From this is the correspondence.
97. For the same reason these same members, organs, and viscera have a like significance in the Word; for everything there has a meaning in accordance with correspondence. Thus the "head" signifies intelligence and wisdom; the "breast" charity; the "loins" marriage love; the "arms and hands" power of truth; the "feet" what is natural; the "eyes" understanding; the "nostrils" perception; the "ears" obedience, the "kidneys" the scrutiny of truth, and so on.{1} So, too, in the common speech of man it is said of one who is intelligent and wise that he has a good head; of one who is charitable that he is a bosom friend; of one who has clear perception that he is keen scented; of one who is intelligent that he is sharp sighted; of one who is powerful that he is long handed; of one who exercises his will from love that it is done from the heart. These and many other expressions in the speech of men are from correspondence, for they are from the spiritual world, although man is ignorant of it.
{Footnote 1} In the Word the "breast" signifies charity (n. 3934, 10081, 10087). The "loins" and organs of generation signify marriage love (n. 3021, 4280, 4462, 5050-5052). The "arms" and "hands" signify the power of truth (n. 878, 3091, 4931-4937, 6947, 7205, 10019). The "feet" signify the natural (n. 2162, 3147, 3761, 3986, 4280, 4938-4952). The "eye" signifies understanding (n. 2701, 4403-4421, 4523-4534, 6923, 9051, 10569). The "nostrils" signify perception (n. 3577, 4624, 4625, 4748, 5621, 8286, 10054, 10292). The "ears" signify obedience (n. 2542, 3869, 4523, 4653, 5017, 7216, 8361, 8990, 9311, 9397, 10061). The "kidneys" signify the scrutiny and correction of truth (n. 5380-5386, 10032).
98. That there is such a correspondence of all things of heaven with all things of man has been made clear to me by much experience, by so much that I am as convinced of it as of any evident fact that admits of no doubt. But it is not necessary to describe all this experience here; nor would it be permissible on account of its abundance. It may be seen set forth in the Arcana Coelestia, where correspondences, representations, the influx of the spiritual world into the natural world, and the interaction between soul and body, are treated of.{1}