in many ways driven about by external
causes, and that like waves of the sea driven by contrary winds
we toss to and fro unwitting of the issue and of our fate. But I
have said, that I have only set forth the chief conflicting
emotions, not all that might be given. For, by proceeding in the
same way as above, we can easily show that love is united to
repentance, scorn, shame, &c. I think everyone will agree from
what has been said, that the emotions may be compounded one with
another in so many ways, and so many variations may arise
therefrom, as to exceed all possibility of computation. However,
for my purpose, it is enough to have enumerated the most
important; to reckon up the rest which I have omitted would be
more curious than profitable. It remains to remark concerning
love, that it very often happens that while we are enjoying a
thing which we longed for, the body, from the act of enjoyment,
acquires a new disposition, whereby it is determined in another
way, other images of things are aroused in it, and the mind
begins to conceive and desire something fresh. For example, when
we conceive something which generally delights us with its
flavour, we desire to enjoy, that is, to eat it. But whilst we
are thus enjoying it, the stomach is filled and the body is
otherwise disposed. If, therefore, when the body is thus
otherwise disposed, the image of the food which is present be
stimulated, and consequently the endeavour or desire to eat it be
stimulated also, the new disposition of the body will feel
repugnance to the desire or attempt, and consequently the
presence of the food which we formerly longed for will become
odious. This revulsion of feeling is called satiety or
weariness. For the rest, I have neglected the outward
modifications of the body observable in emotions, such, for
instance, as trembling, pallor, sobbing, laughter, &c., for these
are attributable to the body only, without any reference to the
mind. Lastly, the definitions of the emotions require to be
supplemented in a few points; I will therefore repeat them,
interpolating such observations as I think should here and there
be added.

DEFINITIONS OF THE EMOTIONS

I. Desire is the actual essence of man, in so far as it is
conceived, as determined to a particular activity by some given
modification of itself.

Explanation.--We have said above, in the note to Prop. ix. of
this part, that desire is appetite, with consciousness thereo