is divided into two hemispheres, the heart into two ventricles, and the lungs into two lobes; the right of all these having relation to the good of truth, and the left to the truth of good, or, what is the same, the right having relation to the good of love from which is the truth of wisdom, and the left having relation to the truth of wisdom which is from the good of love.  And because the conjunction of good and truth is reciprocal, and by means of that conjunction the two become as it were one, therefore the pairs in man act together and conjointly in functions, motions, and senses.

385. (5) By means of this correspondence many arcana relating to the will and understanding, thus also to love and wisdom, may be disclosed.  In the world it is scarcely known what the will is or what love is, for the reason that man is not able, by himself, to love, and from love to will, although he is able as it were by himself to exercise intelligence and thought; just as he is not able of himself to cause the heart to beat, although he is able of himself to cause the lungs to respire.  Now because it is scarcely known in the world what the will is or what love is, but it is known what the heart and the lungs are, — for these are objects of sight and can be examined, and have been examined and described by anatomists, while the will and the understanding are not objects of sight, and cannot be so examined — therefore when it is known that these correspond, and by correspondence act as one, many arcana relating to the will and understanding may be disclosed that could not otherwise be disclosed; those for instance relating to the conjunction of the will with the understanding, and the reciprocal conjunction of the understanding with the will; those relating to the conjunction of love with wisdom, and the reciprocal conjunction of wisdom with love; also those relating to the derivation of love into affections, and to the consociation of affections, to their influx into perceptions and thoughts, and finally their influx according to correspondence into the bodily acts and senses.  These and many other arcana may be both disclosed and illustrated by the conjunction of the heart and lungs, and by the influx of the blood from the heart into the lungs, and reciprocally from the lungs into the heart, and therefrom through the arteries into all the members, organs and viscera of the body.

386. (6) Man’s mind is his spirit, and the spirit is the man, while the body is an external by means of which the mind or spirit feels and acts in its world.  That man’s mind is his spirit, and that the spirit is the man, can hardly enter the faith of those who have supposed the spirit to be wind, and the soul to be an airy something like breath breathed out from the lungs.  For they say, How can the spirit, when it is spirit, be the man, and how can the soul, when it is soul, be the man?  They think in the same way of God because He is called a Spirit.  This idea of the spirit and the soul has come from