idea of _a priori_,
only on a materialistic foundation.[5] A careful consideration
of the passage, however, shows us that Sextus' thought is more
in harmony with the discoveries of modern psychiatry than with
the philosophy of Kant. If the sentence, [Greek: isos de kai
aute (he dianoia) epimixian tina idian poieitai pros ta hypo ton
aistheseon anangellomena],[6] stood alone, without further
explanation, it might well refer to _a priori_ laws of thought,
but the explanation which follows beginning with "because" makes
that impossible.[7] "Because in each of the places where the
Dogmatics think that the ruling faculty is, we see present
certain humors, which are the cause of mixtures." Sextus does
not advance any opinion as to the place of the ruling faculty in
the body, which is, according to the Stoics, the principal part
of the soul, where ideas, desires, and reasoning originate,[8]
but simply refers to the two theories of the Dogmatics, which
claim on the one hand that it is in the brain, and on the other
that it is in the heart.[9] This subject he deals with more
fully in his work against logic.[10] As, however, he bases his
argument, in discussing possible intellectual mixtures in
illustration of the sixth Trope, entirely on the condition of
the organ of the intellect, it is evident that his theory of the
soul was a materialistic one.

[1] _Hyp._ I. 124.

[2] _Hyp._ I. 125.

[3] _Hyp._ I. 126.

[4] See Index to Bekker's edition of Sextus.

[5] Papp. _Er. Pyr. Gr._ p. 55.

[6] _Hyp._ I. 128.

[7] _Hyp._ I. 128.

[8] Diog. VII. 1, 159.

[9] _Hyp._ I. 128.

[10] _Adv. Math._ VII. 313.

_The Seventh Trope_. This Trope, based upon the quantities and
compositions of objects, is illustrated by examples of different
kinds of food, drink, and medicine, showing the different
effects according to the quantity taken, as the harmfulness and
the usefulness of most things depend on their quantity. Things
act differently upon the senses if applied in small or large
quantities, as filings of metal or horn, and separate grains of
sand have a different color and touch from the same taken in the
form of a solid.[1] The result is that ideas vary according to
the composition of the object, and this Trope also brings to
confusion the existence of outward objects, and leads us to
reserve our opinion in regard to them.[2] This Trope is
illustrated by Diogenes with exceeding brevity.