The supremacy of truth was one of the main principles in J.H Newman’s personality. This article highlights this particular feature, but it mainly focuses on the possibility all every human beings needs to either justify their beliefs or reach the citizenship of truth. In this sense, the argument of this work departs from the optional nature of the illative sense. Underlying the present work is the acceptance by a thinking individual to a religious or faith-related truth. From this perspective, it is not arbitrary to consider the systematicity of the grammar of religious acceptance as an inspiring possibility in the design of a renovated grammar of faith.