...(Popper's) championship of rational thought and his effective exposure of confusion and fanaticism in this region, and their often terrible consequences are a genuine asset of Western culture.' -- Sir Isaiah Berlin Sir Karl Popper has made some of the most important contributions to the twentieth-century discussion of science and rationality. "The Myth of the Framework" is a collection of some of Popper's most important materials on this subject. He offers his own critical rationalism, which he regards both as a theory of knowledge and as an attitude towards human life, human morals and democracy.