[1] He made a living writing theater reviews and giving lectures, while working on his habilitation, Grundstile der Kunst.
He joined the building committee (remaining a member until 1970), and was appointed professor in art history.
In 1967, he used his own money to found the Institute for Oriental Art History, which he led until 1985; it became a separate department in 1974.
From 1967 to 1968 he served again as dean of the department of philosophy; even after becoming emeritus, in 1970, he continued to be active in teaching and research.
Since the 1920s, Lützeler wrote on Christian art and was a regular contributor to the Munich-based Catholic monthly magazine Hochland; he was regarded as one of its most important contributors and a representative of the Renouveau catholique movement in Germany, the originally French effort to modernize and enlighten traditional, conservative Catholicism.