The Self, although always provided with the instruments of action, such
as the organ of speech, and so on, acts when it wishes to do so, and
does not act when it does not wish to do so. Just as a carpenter,
although having his axe and other implements ready at hand, works or
does not work just as he pleases. If the internal organ, on the contrary,
were essentially active, it would constantly be acting, since as a non-
intelligent being it could not be influenced by particular reasons for
action, such as the desire for enjoyment.