Austrian-British philosopher of science (1902 to 1994), professor at the London School of Economics; author of The Logic of Scientific Discovery and The Open Society and Its Enemies.
Karl Popper did not write this page.
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Their wordsThere are no ultimate sources of knowledge. Every source, every suggestion, is welcome; and every source, every suggestion, is open to critical examination.
Their wordsThe critical attitude, the tradition of free discussion of theories with the aim of discovering their weak spots so that they may be improved upon, is the attitude of reasonableness, of rationality.