Example image of eyePlorer eyePlorer map for 'Clarence Irving Lewis': 1883 1964 April 12 February 3 Philosophy Pragmatism Epistemology Ethics Logic Stoneham, Massachusetts Anaxagoras Heraclitus Pre-Socratic philosophy Ancient Greek philosophy Immanuel Kant Harvard College University of Colorado at Boulder University of California, Berkeley American Academy of Arts and Sciences American Philosophical Association Wesleyan University Josiah Royce Philosophical logic Bertrand Russell Material conditional Principia Mathematica Strict conditional Conjunction Intensional Modal operator Negation Modal logic Charles Sanders Peirce Gottfried Leibniz S5 (modal logic) Normal modal logic Nazi Germany Positivism Empiricism Logical positivism Charles W. Morris Meaning (linguistics) Pragmatics Rudolf Carnap Semantics Pragmatist Aesthetics Nelson Goodman Qualia Analytic philosophy
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