197. We can apply what we have said here to all the examples that we listed above under the previous heading-as for example, to muscles, to nerves, to the materials and constituents of both the plant and mineral kingdoms, to the organic substances which are the vessels of thoughts and affections in a person, to the atmospheres, to heat and light, and to love and wisdom. In all of these instances the first element is the universally governing one in those that follow; indeed, it is the only governing one in them. And because it is the only governing one in them, it is everything in them. The reality of this is apparent as well from the following considerations of which people are aware, namely, that the end is everything in the cause, and that through the cause it is everything in the effect; and therefore end, cause and effect are called the first end, intermediate end, and last end. People also know that the cause of a cause is also the cause of that which is caused; that the only essential element in causes is the end, and that the only essential element in motion is the endeavor to motion; and that there is only one substance which is substance in itself.