The sensus fidei is a crucial concept which has assumed growing importance during recent years of theological enquiry, however, it is not so easily defined. This article examines a section of the document. Sensus Fidei in the Life of the Church. (ITC, 2014, Chapter 2, no. 48-65) and explores the underlying anthropological-epistemological assumptions which seem to be inherently shaping the idea of the sensus fidei fidelis (the sense of faith of the individual believer). What is the site of such a sense of faith in the personal life of the believer? Is there an adequate theological anthropological framework for imagining the operation of this special ‘faculty’? After commenting on the various definitions of the concept, I focus on the four classical theological key elements the document draws on in articulating a modern account: the Thomistic understanding of faith, virtue, connaturality and instinct. The third section of the article highlights inherent tensions between the traditional Thomistic scheme and a post-Enlightenment, anti-rationalist agenda which call for a more systematic elaboration of an adequate current anthropology of the human person.