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opinion that we ought not to limit ourselves to signs but ought to take account of certain objects more or less analogous to sign.
In practice, however, I have paid little attention to these quasi-signs.

Thus there are in my view of the subject, three branches of logic Speculative Grammar, Critic, and Methodentic.

In the next lecture I shall introduce you to a system of sign which I have invented as an aid in the study of logic.