This paper aims to provide a theoretical framework for the study of the relationship between intellectuals and nationalism in Western nations without states. The first part sets up a theoretical framework which includes a definition of the concepts of nation, state and nationalism and also introduces the concept of nations without states. It then establishes a distinction between ‘state nationalism’ and nationalism in ‘nations without states’. The second part analyses the relationship between intellectuals and nationalism in the work of Elie Kedourie, Tom Nairn, John Breuilly and Anthony D. Smith. The third part considers the specific context within which intellectuals operate in nations without states. It concentrates on the study of the role of Catalan intellectuals in protecting their vernacular language and culture during Franco's regime (1939–75) together with the processes which, in the 1960s and 1970s, turned Catalan nationalism from an elite into a mass movement. Particular attention is given to the cultural resistance activities carried out by Catalan intellectuals during this period, the reasons why some intellectuals may feel attracted to nationalism, and the rational and emotional arguments employed by intellectuals as mobilizing agents.