The capitol of the Lombardy region welcomes Cornelio Fabro twice for a period of study and teaching. In 1939 and 1940 (one semester a year, alternating with Rome), Fabro is invited by Agostino Gemelli, Rector of the Catholic University of the Sacred Heart, to work in the Psychology Lab on the topic of perception. This resulted in the publication of two volumes, Phenomenology of Perception and Perception and Thought. Fabro returns to Milan during the years 1956-1958; precisely in 1957 he receives the appointment of Full Professor for the Chair of Philsophy.