The scientific activity and thought of the Italian philosopher Cornelio Fabro (1911-1995) are still little known in France. This article attempts to introduce Fabro’s early writings to the reader, by presenting the beginning
of Fabro’s research activity in the years 1938-1958 and by analysing the close link between his early writings and the neo-scholastic endeavour taking place at the time in Louvain University’s Superior Institute of Philosophy. Works in the fields of perception psychology and phenomenology impacted his thought and particularly his interpretation of the Angelic Doctor’s ontology in relation
to Heideggerian phenomenology. Hence this present study also offers a survey of the relationship between phenomenology and ontology which, given its intrinsic value, still deserves our attention.