Introduction: Alfred Tarski’s Philosophical Background in the Context of His 1933 Definition of Truth -- The Notion of the Truth Bearer -- Descriptive Psychology: The Theory of Judgement as the Theory of Cognition and Knowledge -- Judgement, Psychology, and Language -- The Ontology of Judgement -- Reism -- The Objectivity of Truth -- Ontologism, Abstract Objects and Nominalism -- Brentanism a…