Paul Feyerabend, 1924-1994. He was born and did his early studies in Vienna, Austria; later he emigrated to the United States. Known as a pluralist and opponent of Karl Popper's philosophy of science. His most noted works were written in English.
1.
Paul Feyerabend
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Biographical and expository essay from the Stanford Encyclopedia, by John Preston.
2.
Against Method (1975)
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Concluding chapter of the book in which the philosopher's argues for the fact that anything can be science.