Abstract

Xavier Zubiri arouses a growing interest as a philosopher. It is, however, well known that he has also treated theological themes; he was concerned especially with the theology of the eucharist. Zubiri was convinced that the most precise concept of the eucharistic transformation was not the «transubstantiation» but «transubstantivation» and «transactualisation». In exposing Zubiri's conviction we meet two fundamental concepts of his philosophy: substantivity and actuality . Yet, to understand adequately these two concepts, it is necessary, it would seem, to start from another fondamental concept of Zubiri: the sentient intelligence . For this reason the article intends, in the first place, to present the Zubirian concept of sentient intelligence, substantivity and actuality, in order, thereafter, to expose the concept of the eucharistic transformation as transubstantivation and transactualisation. Zubiri says that he does not claim to say new things about the eucharist, but only to conceive in his own way the things said before. In agreement with him, the article tries to show that, if one starts from his concept of human intelligence as sentient intelligence, human intellection will be primarily «actuality», the real will be «substantivity», and the adequate concept of the eucharistic transformation will be «transubstantivati