Heterodoxy, sects and sectarianism seemingly belong to the sphere of religions; they obviously refer to doctrinal organizational and behavioral aspects of dissension within the frameworks of religions. It would, however, be wrong to think that their importance is confined only within such frameworks—broad and important as they are. The importance of heterodoxy and sectarianism is indeed much wider. It is much wider not only because the term sect has been often used—as Roger Caillois has demonstrated in his brilliant essay on “L'Esprit des Sectes”—to refer to a much broader range of phenomena in the overall political and social order. The very possibility of using this term beyond its strictly religious connotation indicates that the developments of sectarianism, rooted as it is in the sphere of religion, are, potentially at least, of much broader implications.
This was, of course, most clearly seen and elaborated by Max Weber who, in his classical essays on the comparative sociology of religions, was among the first to stress the place of dissent and heterodoxy, not only from the point of view of the doctrinal or organizational development of various religions, but from the broader point of view of the broader civilizational dynamics, of the innovative capacity of different civilizations.