The physical body may be likened to a clock; it has its mechanism and it requires winding; and this winding keeps it going. It is the healthiness of the physical body which enables it by its magnetic power to hold the soul which functions in it. As this body for some reason or other, either by disorder or by having been worn out, loses that power by which it holds together; it gives way, and the soul naturally departs, leaving the material body as one would throw away a coat which one no longer needs.