Critic

In my view, logic has three parts, 1^st the Elements which makes analysis of what one has to deal with; Arguments &c. 2^nd Critic...

The whole discussion of the logical nature of the different kinds of possible signs makes up the first division of logic, or Speculative Grammar. The second...

That our thoughts are signs is an old and familiar doctrine. I show that it is only in so far as thoughts are signs, and particularly […] symbols, that they become subjects of logic; and further...

The function of logic, in its critical part, is to criticize the connection between premisses and conclusions.

Semeiotics has three parts: Speculative Grammar, which studies the essential nature of the different kinds of signs; Critic, which studies the general conditions of their...

Robin Catalogue:
A. MS., n.p., [1905-06?], pp. 1-29, with 2 pp. of variants.
“Maiotic” method of Socrates. The Athenian Schools and the emergence of Aristotle. Why the logical...

The second part [of logic], which classifies reasonings and determines their value, received from the eminent English logician, Hobbes, and from the great English...

[Methodeutic] is not possible until the logician has first examined all the different elementary modes of getting at truth and especially all the different classes of...

Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 1-14.
The purpose of logic; the division of logic into speculative grammar, critic, and methodeutic. Why “methodeutic” as a...

Robin Catalogue:
A. MS., notebook, G-1903-2a, pp. 37-61.
Published, in part, as 1.611-615 and 8.176 (except 176n3) (pp. 37-49 and 51-53). Unpublished: criticism of Sigwart and...

[“Logical Critic”] discusses the justification of each of the essentially different kinds of reasoning…

From the Robin Catalogue:
A. MS., n.p., n.d., pp. 1-4, 10-14; plus 9 pp. of variants and 1 p. (fragment).
An attempt to define “sign” as a medium for the communication of form....

From the Robin Catalogue:
A. MS., n.p., 2 pp. of one of the alternative sections are dated April 5 and 7, 1911, pp. 1-18, with several alternative sections.
The contempt for...

… my doctrine of Logical Critic [—] I recognize two other parts of Logic. One which may be called Analytic examines the nature of thought, not psychologically but simply to define what it...

The highest kind of symbol is one which signifies a growth, or self-development, of thought, and it is of that alone that a moving representation is possible; and accordingly, the central problem...

… a speculative rhetoric, the science of the essential conditions under which a sign may determine an interpretant sign of itself and of whatever it signifies, or may, as a sign, bring...

All thought being performed by means of signs, logic may be regarded as the science of the general laws of signs. It has three branches: (1) Speculative Grammar...

Logic, which began historically, and in each individual still begins, with the wish to distinguish good and bad reasonings, develops into a general theory of signs....

That part of logic, that is, of logica docens, which, setting out with such assumptions as that every assertion is either true or false, and not both, and that...

From the Robin Catalogue:
A. MS., G-1903-2b and G-1903-2d, pp. 1-168 (pp. 106-136 missing); a second title page; pp. 2-23 of a revised section; 69 pp. of variants; and a...