We are therefore justified in calling movement "an active form that
is aroused," by opposition to the other forms which remain inactive.
(They may be so named), whether or not they be permanent. We may add
that it is "the cause of the other forms," when it results in producing
something else. This (sense-) movement may also be called the "life of
bodies." I say "this movement," because it bears the same name as the
movements of the intelligence, and those of the soul.