Combining Texts

You have chosen 'Letters to a German Princess' by Leonhard Euler, 'Criterion of Validity in Reasoning' by Charles Sanders Peirce and 'Eight Theories of Ethics' by Gordon Graham

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All the ideas for Theory of Logic, or select a subheading:

	A.	Overview of Logic
	B.	Logical Consequence
	C.	Ontology of Logic
	D.	Assumptions for Logic
	E.	Structures of Logic
	F.	Referring in Logic
	G.	Quantification
	H.	Proof Systems
	I.	Semantics of Logic
	J.	Model Theory in Logic
	K.	Features of Logics
	L.	Paradox