He taught at the Liceo Classico "Tito Lucrezio Caro" as IRC from 1975 to 2007.  From 1991 to today he has been teaching at theHigher Institute of Religious Studies "Ecclesia Mater" della Pontifical Lateran University. Called in 1986 to teach the History of Religions at the "Caymari" Institute connected to the Pontifical Lateran University, he then began teaching in 1991, still carried out, at the Higher Institute of Religious Sciences "Ecclesia Mater" of the same Pontifical University and since 2007 at the Higher Institute of Religious Sciences "Fides et Ratio" of L'Aquila, as a permanent teacher, in the teachings of Philosophy of religion, The problem of God in 20th century philosophy, Problems and questions of contemporary philosophy, Introduction to philosophy, The ideologies of the twentieth century.

 

In 1997, for five years, he was also professor of Fundamental Theology and Dogmatic Theology at LUMSA. He is a member of the scientific committee of Rosminian Review, the oldest Italian philosophical journal (founded in 1906) for which he has produced numerous essays and reviews and is a founding member of the International Society for the Unity of Sciences "L'Arcipelago". He was a scientific member of the organization of the International Congress of Naples, for the bicentenary of the death of Antonio Rosmini, held at the Italian Institute of Philosophical Studies in  Naples from 22 to 25 October 1997.

    

In addition to the "Rivista Rosminiana" Rossi has collaborated with numerous other philosophy magazines; “Philosophy Today”, “Magazine of Neo-Scholastic Philosophy”, “The Contribution”, “Reviews”, “Metalogicon”. He is  was also a member of the Scientific Committee of El uno y  lo mùltiple of Beunos Aires.

    

He collaborated with RadioThree from 1981 to 1985 for the presentation of philosophy books and journals.   

He worked with Corrado Giannantoni with whom he wrote Dal multi-verso all'Uni-verso tendential, published by Sigraf with the funding of the Order of Engineers of Pescara. Giannantoni explicitly mentions Roberto Rossi in the text Paper Emergy Conference Gainesville 2016 and in the references of the same paper. Already in October 2002 he had prepared the preface to the volume C. Giannantoni, The maximum Em-Power principle as the basis for thermodynamics of Quality, co-financed by the "Center for Environmental Policy" of the University of Florida in Gainesville, then translated into Italian with the title The principle of maximum emergetic power as the basis for a thermodynamics of Quality, publication edited by the Order of Engineers of Pescara published by Sigraf in 2006. The book with which Roberto Rossi made his debut was however a small volume of 1983 reviewed in "Civiltà Cattolica ” from Gualberto Giachi, On Atheism. Aphorisms, published by the Cultural Editorial Studio of Genoa.

 

The National Research Council (CNR) then decided to finance the costs of publishing the two texts by Roberto Rossi on the grounds that they were the first works in Italy on those themes: Time and sacredness in Nietzsche and Overbeck, Abete, Rome 1985 and Nietzsche and Burckhardt, Tilgher, Genoa 1987. For this reason these two works and other essays on the same subject suggested to Professor Giorgio Penzo to ask for Rossi's collaboration for the entries "Burckhardt" and "Overbeck" relating to the volume Nietzsche. Atlas of his life and thought, Rusconi, Milan 1999. After the contribution given to the Trento Conference Burckhardt, Overbeck and Nietzsche: Christianity or Nihilism Marcello Frediani (whom Luca Doninelli defines as "the genius of linguistics" and who died prematurely in 1991 for a poorly treated melanoma) interviewed Roberto Rossi for the weekly "Il Sabato".

    

In 2003, Maria Adelaide Raschini dedicated a volume to one of her reference figures, Maria Adelaide Raschini. The intelligence of charity winner of the International Prize and in 2005 published Foundation and history with an introduction by Antonio Livi now in its fourth edition reprint.

    

Reprinted in Italian and translated into Portuguese (Introduçao à philosophy, Ed. Loyola, S. Paolo del Brasile 1996) another well-circulated text is Introduction to Philosophy. History and systems published in 1993 and reprinted in 2001.

    

Between 2006 and 2012 he published the three volumes on The ideologies of the twentieth century and more recently two ponderous volumes of over 1000 pages on Hegel-Rosmini for the Biblioteca di Studi Rosminiani.

    

He spoke with a contribution on Good and Evil in Catholic Christianity, at the ASUS National Conference, organized by the Faculty of Letters of the Roma Tre University, 25-26 October 2013 for dialogue between religions and on Jesus in literature and philosophy, Published onwww.vicariatusurbis.org/spiov/.../Ges%20nella%20letteratura.pdf.

    

Recently, on December 15, 2022, he was one of the curators of the interreligious meeting between Jews and Muslims at the Pontifical Lateran University on the theme of Hanukkah, the festival of lights. Meaning and rites of celebration.

    

His scientific production also boasts about sixty conferences, essays and reports and about three hundred reviews.