“The main purpose of this book is the development of a new method for the semantical analysis of meaning, that is, a new method for analyzing and describing the meanings of linguistic expressions. This method, called the method of extension and intension, is developed by modifying and extending certain customary concepts, especially those of class and property. The method will be contrasted with various other semantical methods used in traditional philosophy or by contemporary authors.”

—  Rudolf Carnap

Source: Meaning And Necessity (1947), p. v: Preface

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Rudolf Carnap21
German philosopher 1891–1970

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