Q.E.D.
Prop. [III] An emotion, which is a passion, ceases
to be a passion, as soon as we form a
clear and distinct idea thereof.
Proof.- (3:1) An emotion, which is a passion, is a confused idea
(by III:[GENERAL DEFINITION OF THE EMOTIONS]). (2) If, therefore, we
form a clear and distinct idea of a given emotion, that idea will
only be distinguished from the emotion, in so far as it is referred
to the mind only, by reason (II:[xxi] & Note); therefore
(III:[iii] ), the emotion will cease to be a passion. Q.E.D.
Corollary.- (3:3) An emotion therefore becomes more under our control,
and the mind is less passive in respect to it, in proportion as it is
more known to us.
Prop. [IV] There is no modification of the body,
whereof we cannot form some clear and
distinct conception.
Proof.- (4:1) Properties which are common to all things can only be
conceived adequately (II:[xxxviii] ); therefore (II:[xii] and II:[L.ii] .)
there is no modification of the body, whereof we cannot form some clear
and distinct conception. Q.E.D.
Corollary.- (4:2) Hence it follows that there is no emotion, whereof we
cannot form some clear and distinct conception. (4:3) For an emotion
is the idea of a modification of the body (by
III:[GENERAL DEFINITION OF THE EMOTIONS]), and must therefore (by [iii] )
involve some clear and distinct conception.
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