Peircers,
Another passage from ''Natural Propositions'' that appeared to light up before
my mind's eye — I'm guessing because of all the time I whiled away wrestling
with divergent views of assertion when I first began studying the history of
logic — is this selection from Chapter 3.
<quote>
3.4. The Double Function of the Dicisign
The function of expressing truth or falsity is possible only by means of the
Dicisign having a particular double structure which Peirce describes in various
ways, already in the early nineties:
"Every assertion is an assertion that two different signs have the same object."
("Short Logic", 1893, CP 2.437).
An assertion is the speech act of claiming that a proposition is true. As a
sign, the proposition must involve those two different signs: it must, at the
same time, fulfill two functions connecting it in two different ways to the same
object, the index and the icon mentioned above. This is the reason why many
propositions possess an internal structure composed from two separate parts,
each fulfilling its specific function. Oftentimes, Peirce generalizes the
classical notions of subject and predicate to account for these two aspects of
Dicisigns: ...
</quote> (Frederik Stjernfelt, ''Natural Propositions'', p. 55)
At this point Frederik quotes a passage from the 1903 ''Syllabus'' that is found
in CP 2.312 and EP2 p. 277. By way of providing additional context that I found
to be helpful, I will supply a slightly more generous sample of that text in my
next post.
Regards,
Jon
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