The theme of being a subject is one of the most important themes in contemporary pedagogical discussions. There is a problem appearing in these discussions connected with understanding the term ‘being a subject’. Some philosophers and theorists of education maintain that each human being is a subject. Others indicate that people become the subjects in a process of individual development, in consequence of development of the rationality and the freedom. In the article the author tries to explain how Thomistic philosophy and pedagogy understand ‘being a subject’. He indicates that it is necessary to differentiate being a subject in the metaphysical sense (in this sense each human being is a subject) from being a subject in the functional sens...