Rudolf Carnap: Quotes about science

“Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.”

Rudolf Carnap

Source: The unity of science, 1934/1995, p. 42

Science

“Logic is not concerned with human behavior in the same sense that physiology, psychology, and social sciences are concerned with it. These sciences formulate laws or universal statements which have as their subject matter human activities as processes in time. Logic, on the contrary, is concerned with relations between factual sentences (or thoughts). If logic ever discusses the truth of factual sentences it does so only conditionally, somewhat as follows: if such-and-such a sentence is true, then such-and-such another sentence is true. Logic itself does not decide whether the first sentence is true, but surrenders that question to one or the other of the empirical sciences.”

Rudolf Carnap

Rudolf Carnap (1937) cited in: Irving J. Lee (1967) The Language of Wisdom and Folly: Background Readings in Semantics. International Society for General Semantics, p. 44

Truth , Law , Behavior , Question

“Philosophy is to be replaced by the logic of science -- that is to say, by the logical analysis of the concepts and sentences of the sciences, for the logic of science is nothing other than the logical syntax of the language of science.”

Rudolf Carnap

Foreword
Logical Syntax of Language, 1934/1937

Science

“The function of logical analysis is to analyse all knowledge, all assertions of science and of everyday life, in order to make clear the sense of each such assertion and the connections between them. One of the principal tasks of the logical analysis of a given proposition is to find out the method of verification for that proposition.”

Rudolf Carnap

Rudolf Carnap (1935) Philosophy and Logical Syntax. p. 9-10

Life , Knowledge , Sense , Science

“According to this view, the sentences of metaphysics are pseudo-sentences which on logical analysis are proved to be either empty phrases or phrases which violate the rules of syntax. Of the so-called philosophical problems, the only questions which have any meaning are those of the logic of science. To share this view is to substitute logical syntax for philosophy.”

Rudolf Carnap

Source: Logical Syntax of Language, 1934/1937, p. 8

Question , Problem , Science

“For those who want to develop or use semantical methods, the decisive question is not the alleged ontological question of the existence of abstract entities but rather the question whether the rise of abstract linguistic forms or, in technical terms, the use of variables beyond those for things (or phenomenal data), is expedient and fruitful for the purposes for which semantical analyses are made, viz. the analysis, interpretation, clarification, or construction of languages of communication, especially languages of science.”

Rudolf Carnap

Source: Empiricism, Semantics, and Ontology (1950), Ch. 5. Conclusion

Communication , Question , Decision , Science

“In science there are no 'depths'; there is surface everywhere.”

Rudolf Carnap

Rudolf Carnap (1929) from the Vienna Circle manifesto.

Science