The philosophy of St Thomas Aquinas is directed towards theology both as the language of God and the language about God. It concerns meaningfulness, functionality, and proper use of language. The Thomistic theory of language is based on the main Aristotelian principles: an empirical condition of knowledge and isomorphic relationship between language and reality. A process of conceptualization beginning with empirical perception becomes crucial for this adequacy. However, if in Aristotelian view the reality is postulated as objectively existing over there, Thomas Aquinas is not contented with such a realistic stand, especially as his philosophy deals not only with natural reality, but also with supernatural one, integrating them into one ont...