Abstract

In 1513 the Fifth Lateran Council determined that the immortality of the rational soul is not true only in theology, but also in philosophy. The determination can be related also to the actual teaching of philosophy. In the university of Erfurt, Bartholomaeus Arnoldi de Usingen and Jodocus Trutfetter wrote expositions on natural philosophy at that time. Usingen's and Trutfetter's expositions of De anima represent a position, which faithfully follows in methodology and aspirations the tradition of the via moderna. Furthermore, they give an interpretation of the relationship between philosophy and theology, which Trutfetter considered consonant with the intentions and the formulations of the Fifth Lateran Council; and finally, Trutfetter even presents a practical application of the Council's recommendations.