Abstract

The goal of the present article is to give an answer on the question: Does the first quaestio of the Prima Pars of Aquinas Summa theologiae represents a key for the general insight into the fundamental doctrines, the structure and the method of the most famous work of St. Thomas? Thomists like James Weisheipl answered in the negative to this question. But this paper intents to show by an careful analysis of Sth Ia, q. 1, that this treatise about the necessity, the nature and the method of sacra doctrina is strictly dovetailed with the complete Summa. In a figurative way its possible to speak about this quaestio as a portal of the «cathedral» of the Summa, from which one can survey the complete ensemble of architectonic motifs building this cathedral