EN
The paper presents the influence of scientific postulates of Kazimierz Twardowski and his intellectual followers (among others: Tadeusz Kotarbiński, Jan Łuka-siewicz, Tadeusz Czeżowski, Władysław Witwicki, Kazimierz Ajdukiewicz) on the way in which Mieczysław Wallis and Stanisław Ossowski understood and practiced aesthetics. Both S. Ossowski and M. Wallis, respecting the scientific programme of the Lvov-Warsaw School, accepted a lot of its methodological assumptions. They both negated its traditional approach as valuating and meta-physically-oriented discipline, as opposed to the vision of scientific aesthetics. The aesthetics they practiced was supposed to be an empirical science (independ-ent of irrational and speculative elements and its principal categories were sup-posed to be approached in the anti-objective and anti-absolutist way).