Let us forget ‘religious sociology’, a misleading mistranslation from the French, which to an English audience confuses two quite different things. The ‘Christian’ or ‘Catholic’ sociologist studies, like the sociologists of any other denomination, how behaviour—not particularly religious behaviour, but behaviour in general—is affected by the social structure. His method is factual and scientific, like that of the non-Christian. But he uses insights from the theology of social order and the Christian conception of the natural law as a guide in picking problems to investigate, and to help decide what should be done about them once the facts are revealed. ‘Religious sociology’, on the other hand, as it has come to be understood on the Continent—the right English translation is the ‘sociology of religion’—is a much narrower field, and one not specifically Christian. It studies how the practice of religion, that is religious as apart from general behaviour, is influenced by the social structure. As Fr Virton, s.J., puts it in a question quoted in this report: