The papers aims to enter the traditional topic of the relationship between faith and reason in the context of the current discussion on the concept of rationality. From the contemporary transformations caused by the impulse of historical reason and hermeneutics reason, we propose a different approach to the issue, based on consideration of a believer rationality, as the Christian dimension of all rationality. This fundamental articulation, a common human thought space with several dimensions, does not prevent differentiated achievements of rationality with which faith enters into a relationship in the conduct of its own rationality. In this context, the relationship with the aesthetic rationality takes pride of place.<br /><br /