Moved by the desire to discover the ultimate truth about existence, man seeks to acquire the universal knowledge that enables him to better understand himself and progress in the realization of himself.
The use of reason, the so-called «expanded reason» and the search for truth in Ratzinger are found not so much in the academic articles that the emeritus pontiff has dedicated to the question, but in its effective use, that is, in how he himself has used reason to grasp reality. It is therefore a question of seeing how to use reason and see it in action. In short, of a use of reason that is challenged by reality, that leads him to be amazed and to know with truth.