Abstract
The author proposes an interpretation of the religious trans formations of Spanish society, basing himself on a critical approach to the theory of secularization. In order to do this, I evoke the critical point captured by the concept of rationalization, itself linked to the idea of a segmentation of spheres of existence. But, for his part, the author says that what brings into relief th idea of secularization is not so much a segmentation of existence and a marginalization of religion, but much rather a metabolism of the religious ans of social interaction.