SANTO TOMÁS DE AQUINO Y SIGERIO DE BRABANTE: LA DUPLEX VERITAS COMO NUNCIO DE UNA SECULARIZACIÓN EN CIERNES

This paper analyzes the XIII century’s doctrine of double truth attributed to a Master of the Faculty of Arts of the University of Paris, Siger of Brabant. We will not, however, concentrate on determining if he was the authentic author of the duplex veritas; instead, our interpretation will focus on the importance of this doctrine as the source of a complex process of secularization that would end with separating faith from reason, theology from philosophy and from a socio-political perspective, the spiritual power from the temporal one.