Peirce's understanding of logic is similar to the core ideas in the Socratic dialectic

Joseph Ransdell, "Peirce and the Socratic Tradition" at ARISBE: THE PEIRCE GATEWAY: "Had it not been for the formal work of Aristotle, the Stoic logicians, Kant, Boole, and DeMorgan, Peirce doubtless could not have reconceived and generalized the principles of logic as he did and been able to arrive finally at his own conception of logic as semiotic. But there is a core of ideas in Peirce's understanding of what logic is which is similar to the core ideas implicit in the practice of Socratic dialectic, and these ideas are not available in Aristotle or in the thinking of any of the other formalists who developed logic after Socrates and Plato, as far as I can see."

Global Online Privacy