[3] The consequence of the
incompatibility of the mental representations produced through
the several sense organs by the apple, may be the acceptance of
either of the three following propositions: (i) That only those
qualities exist in the apple which we perceive. (ii) That more
than these exist. (iii) That even those perceived do not
exist.[4] Accordingly, any experience which can give rise to
such different views regarding outward objects, cannot be relied
upon as a testimony concerning them.
[1] _Hyp._ I. 90.
[2] _Hyp._ I. 94.
[3] Diog. IX. 11 81.
[4] _Hyp._ I. 99.
The non-homogeneous nature of the mental images connected with
the different sense organs, as presented by Sextus, reminds us
of the discussion of the same subject by Berkeley in his _Theory
of Vision_.
Sextus says that a man born with less than the usual number of
senses, would form altogether different ideas of the external
world than those who have the usual number, and as our ideas of
objects depend on our mental images, a greater number of sense
organs would give us still different ideas of outward
reality.[1] The strong argument of the Stoics against such
reasoning as this, was their doctrine of pre-established harmony
between nature and the soul, so that when a representation is
produced in us of a real object, a [Greek: kataleptike
phantasia],[2] by this representation the soul grasps a real
existence. There is a [Greek: logos] in us which is of the same
kind, [Greek: syngenos], or in relation to all nature.
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