Quotations From KARL POPPER

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  • In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.
    Karl Popper (1902-1994), Austrian-British philosopher of science. The Logic of Scientific Discovery, p. 314 (1934). The author's famous criterion of demarcation.
  • Science may be described as the art of systematic over- simplification.
    Karl Popper (b. 1902), AngloAustrian philosopher. quoted in Observer (London, Aug. 1, 1982).
  • If we call the world of "things"Mof physical objects—the first world, and the world of subjective experiences (such as thought processes) the second world, we may call the world of statements in themselves the third world.
    Karl Popper (1902-1994), Austrian born-British philosopher of science. Unended Quest, p. 181 (1976). Originally published in The Library of Living Philosophers: The Philosophy of Karl Popper, "Autobiography of Karl Popper," ed. P. Schilpp (1974). The famous distinction by which the author defends logic, semantics, etc., against psychologism.

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