385. (5) Through that correspondence one can discover many secrets relating to the will and intellect, and so also to love and wisdom. People in the world scarcely know what the will is and what love is, since a person cannot of himself love and from loving will in the manner that he can seemingly of himself understand and think-just as he cannot of himself compel the heart to pump in the manner that he can of himself compel the lungs to breathe. Now because people in the world scarcely know what the love and will are, and yet know what the heart and lungs are-for the latter two are visible to the eyes and can be examined, and by anatomists also have been examined and described, whereas the will and intellect are not visible to the eyes and cannot be examined-therefore when it is known that they correspond and by correspondence operate in union, many secrets can be discovered relating to the will and intellect which could not otherwise be discovered. As for example, secrets relating to the conjunction of the will with the intellect, and to the reciprocal conjunction of the intellect with the will, or secrets relating to the conjunction of love with wisdom, and to the reciprocal conjunction of wisdom with love. Also secrets relating to the ramification of love into affections, to the affiliations of affections, and to the influx of these into perceptions and thoughts, descending finally according to their correspondence into actions and sensations of the body. These and many other secrets can be both discovered and demonstrated from the conjunction of the heart and lungs, and from the influx of blood from the heart into the lungs and the reciprocal influx of it from the lungs into the heart, and its influx from there through the arteries into all the body's members, organs and viscera.