Summary This article introduces a set of essays examining the state of political thought in the Western European democracies of Britain, France, West Germany, Italy and Sweden in the post-war period between 1945 and 1970. In particular, as well as simply filling a gap, they seek to demonstrate that political theory in this period was more vibrant than has traditionally been maintained. A key part of this argument is that the discipline was less adversely affected by the ascendancy of positivism (...) than historians and political theorists have normally argued, not least because ?positivism? was in fact a more diverse and varied phenomenon than is usually recognised. For while some positivists drew on either behaviourist social science of linguistic philosophy to justify their denial that moral and political values could be discussed rationally with reference to theoretical arguments, others argued that it was the perceived success of post-war welfare states or the alleged failure of political ideologies that had made traditional political theory irrelevant. This meant that although few political theorists in this period were able to refute all types of positivism entirely, they were able to take issue with different aspects of it, and hence, at least to some extent, to pursue their discipline normatively. However, experiences in different Western European countries nevertheless varied widely. In Britain, normative political theorists faced both versions of the positivist challenge, but their ripostes were largely couched in academic terms, whether addressing the ?end of ideology? thesis, behaviourism or linguistic positivism. In West Germany, by contrast, the debate over positivism was much more overtly political, since the legacy of the Weimar republic caused the issue of whether political values in general, and laws in particular, were rationally justifiable to be a peculiarly sensitive one. But even in Sweden, which had a much quieter history, and has often been seen as the epitome of a technocratic political system, it is revealed that the degree to which ?the end of ideology? had been reached was much more keenly contested in practical politics than has previously been thought. And in France, it is revealed that there was more interesting academic political theorising being prosecuted than has traditionally been acknowledged, by such thinkers as Jacques Maritain and Raymond Aron, even if there was admittedly less than in, for example, Britain. And lastly, in Italy, despite a badly functioning political system, which tended to encourage cynicism about politics in general, there were in fact important and sophisticated attempts at formulating coherent normative positions, at least on an ideological level. Whatever the differences, however, the conclusion is clear: normative political theory was in general in much better health during this period than has traditionally been admitted, and, as such, is worthy of considerable further exploration. (shrink)