Digital Companion to C. S. Peirce
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Some Wit, Wisdom & Bewilderment
At the outset, we define the principal purpose of logic to be to learn how to conduct any inquiry. [---] In my opinion, the purpose of logic must ultimately come to be recognized as that of studying all that will be true of signs, or representations, independently of what particular signs have actually been created.
Lowell Lectures, 1903