motion is the outmost degree of conatus, through motion conatus exerts
its power. Conatus, force, and motion are no otherwise conjoined than
according to degrees of height, conjunction of which is not by continuity,
for they are discrete, but by correspondences. For conatus is not force,
nor is force motion, but force is produced by conatus, because force is
conatus made active, and through force motion is produced; consequently
there is no power in conatus alone, nor in force alone, but in motion,
which is their product. That this is so may still seem doubtful, because
not illustrated by applications to sensible and perceptible things in
nature; nevertheless, such is the progression of conatus, force, and
motion into power.

219. But let application of this be made to living conatus, and to living
force, and to living motion. Living conatus in man, who is a living
subject, is his will united to his understanding; living forces in man
are the interior constituents of his body, in all of which there are
motor fibers interlacing in various ways; and living motion in man is
action, which is produced through these forces by the will united to
the understanding. For the interior things pertaining to the will and
understanding make the first degree; the interior things pertaining to
the body make the second degree; and the whole body, which is the complex
of these, makes the third degree. That the interior things pertaining to
the mind have no power except through forces in the body, also that forces
have no power except through the action of the body itself, is well known.
These three do not act by what is continuous, but by what is discrete;
and to act by what is discrete is to act by correspondences. The interiors
of the mind correspond to the interiors of the body, and the interiors of
the body correspond to the exteriors, through which actions come forth;
consequently the two prior degrees have power through the exteriors of
the body. It may seem as if conatus and forces in man have some power