[XIV] The human mind is capable of perceiving a great
number of things, and is so in proportion as its
body is capable of receiving a great number of
impressions.
Proof.- (14:1) The human body (by [Po.iii] and [Po.vi] ) is affected
in very many ways by external bodies, and is capable in very many ways
of affecting external bodies. (2) But ([xii ] ) the human mind must
perceive all that takes place in the human body; the human mind is,
therefore, capable of perceiving a great number of things, and is so
in proportion, &c. Q.E.D.
Prop.[XV] The idea, which constitutes the actual being of the
human mind, is not simple, but compounded of a great
number of ideas.
Proof.- (15:1) The idea constituting the actual being of the human
is the idea of the body ([xiii] ), which ([Po.i] ) is composed of a
great number of complex individual parts. (2) But there is necessarily
in God the idea of each individual part whereof the body is composed
([viii] Coroll.); therefore ([vii] ), the idea of the human body is
composed of these numerous ideas of its component parts. Q.E.D.
Prop.[XVI] The idea of every mode, in which the human body is
affected by external bodies, must involve the nature of
the human body, and also the nature of the external body.
Proof.- (16:1) All the modes, in which any given body is affected, follow
from the nature of the body affected, and also from the nature of the
affecting body (by [A.
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