Combining Texts

You have chosen 'Preface to 'Principles of Philosophy'' by René Descartes, 'Notes on John Wilkins' by Gottfried Leibniz and 'Letters to Jourdain' by Gottlob Frege

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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