191. When the mind has been continually upon the stretch, at its work, it aspires to rest; and when it rests it descends into the body, and seeks there its pleasures, correspondent to its mental operations, which the mind chooses, according to its interior state in the viscera of the body. The interior things of the body derive their pleasures chiefly from the senses of sight, hearing, smell, taste, and touch, delights which are in fact drawn from outward things, but yet insinuate themselves into the single parts of the body, which are called members and viscera. From hence and from no other source have they their delights and pleasures. The single fibers, and single tissues of fibers, the single capillary vessels, and thence the common vessels, and so all the viscera in common, derive their own delights; which a man then perceives, not singly but universally, as one common sensation. But just as is the mind within them, from the head, such are the delights, pure or impure, spiritual or natural, heavenly or infernal. For within, in every sensation of the body, is the love of his will, with its affections; and the understanding makes him to perceive their delights. For the love of the will, with its affections, constitutes the life of every sensation; and the perception thence of the understanding produces the sensation. Hence come all delights and pleasures. For the body is a connected work, and one form. Sensation communicates itself, like a force applied to a chain with its single links; and as a form which has been wrought together from uninterrupted links.