Abstract
Contemporary axiological research shows that what is intuitive, perceptible, and at the same time fundamental, is not clearly visualized, concrete and expressible for language. The problem of the definition of value is further complicated when the matter concerns the top of the axiological ladder, absolute value, what is sacred. In the article, the author relies mainly on the achievements of eminent phenomenologists, theologians and religious studies scholars who had a decisive influence on the European understanding of the term sacrum (including R. Otto, M. Scheler, G. van der Leeuw, M. Eliade). It also refers to the achievements of Polish philosophers. The sacrum is presented as a factor ordering reality in an axiological and ontological sense. The very search for the highest value appears to be a matter of the utmost importance, a special task facing homo religiosus.