390. (vii) The conjunction of man's spirit with the body is by means of the correspondence of his will and understanding with his heart and lungs, and separation comes through non-correspondence. As it has been unknown hitherto that man's mind, that is, the will and understanding, is his spirit, and that the spirit is the man, and moreover, that man's spirit as well as his body has a pulse and respiration, it could not be known that the pulse and respiration of the spirit in man flow into the pulse and respiration of his body and produce them. Since, therefore, man's spirit, equally with his body, enjoys a pulse and respiration, it follows that there is a like correspondence of the pulse and respiration of a man's spirit with the pulse and respiration of his body, for, as was said, the mind is his spirit, consequently, when their dual motions cease to correspond, a separation comes, which is death. Separation or death occurs when, from some sickness or accident, the body comes into such a condition as to be unable to act in unison with its spirit, for thus correspondence perishes, and with it conjunction; not when respiration alone ceases, but when the heart beat ceases. For so long as the heart is in motion, love with its vital heat remains and preserves the life, as is clear from cases of swooning and suffocation, and from the condition of foetal life in the womb. In a word, man's bodily life depends on the correspondence of its pulse and respiration with the pulse and respiration of his spirit; and when that correspondence ceases, his bodily life ceases, and his spirit departs and continues its life in the spiritual world, which is so like his life in the natural world that he does not know that he has died. Most people are out of the body and in the spiritual world after a lapse of two days. I have spoken with some after two days.