644. That by the “mansions” are signified the two parts of man, which are the will and the understanding, is evident from what has been stated before: that these two parts, the will and the understanding, are most distinct from each other, and that for this reason, as before said, the human brain is divided into two parts, called hemispheres. To its left hemisphere pertain the intellectual faculties, and to the right those of the will. This is the most general distinction. Besides this, both the will and the understanding are distinguished into innumerable parts, for so many are the divisions of the intellectual things of man, and so many those of the will, that they can never be described or enumerated even as to the universal genera, still less as to their species. A man is a kind of least heaven, corresponding to the world of spirits and to heaven, wherein all the genera and all the species of the things of the understanding and of the will are distinguished by the Lord in the most perfect order, so that not even the least of them is undistinguished, concerning which, of the Lord’s Divine mercy hereafter. In heaven these divisions are called Societies, in the Word “habitations” and by the Lord “mansions” (John 14:2). Here also they are called “mansions” because they are predicated of the ark, which signifies the man of the church.