In Florence, he learned about Renaissance art as well as the thoughts of St. Francis of Assisi, as a result of which Fülep, who had previously been considered an anarchist thinker, was converted to Christianity.

[4] in the 1930s he was a professor at the University of Pécs, teaching philosophy of art, aesthetics and Italian literature, where his friendship with Sándor Weöres began.

[1] After the Second World War he was appointed a professor in the Italian department of Pázmány Péter University, and then he moved back to Budapest for a year, where he became a lecturer at the Eötvös Collegium.

At that time, he was appointed head of the Department of Art History at Eötvös Loránd University and held this position for ten years.

[3] During the final years of his life, Fülep lived in retirement and continued his writings and research on art, philosophy and history.