Jean-Marie Mayeur, La question laïque (XIXe–XXe siècle) (Paris: Fayard, 1997), 239 pp., 95 FF. IBSN 2–213–60013–9.Etienne Fouilloux, Les chrétiens français entre crise et libération (1937–1947) (Paris: Seuil, 1997), 293 pp, 130 FF. ISBN 2–020–28131–7.Stathis N. Kalyvas, The Rise of Christian Democracy in Europe (Ithaca and London: Cornell University Press, 1996), 300 pp., £15.95. ISBN 0–8014–8320–4.Emiel Lamberts, ed., Christian Democracy in the European Union (1945–1995) (Leuven: Leuven University Press, 1997), 511 pp. ISBN 9–061–86808–4.‘Christians and political life’ (taking the latter term in its widest sense) is a theme which continues to attract a great deal of interest among contemporary historians, in terms of both detailed research and broader surveys. René Rémond and Aline Coutrot demonstrated the interconnectedness of the two domains of religion and politics when they abandoned the restricted subject of relations between states and the Roman Catholic church and initiated the study of religion as an integral part of history, and the social sciences, as a whole. Approaches since 1966 have been greatly modified, as shown by the treatment of the material in the four works now to be reviewed.