Abstract
The concept of truth has many aims but only one source. The article describes the primary concept of truth, here called the
synthetic concept of truth, according to which truth does not belong exclusively to us nor exclusively to nature: truth is the objective result of the synthesis of us and nature in the process of rational cognition. It is shown how various aspects of the concept of truth – logical, scientific, and mathematical aspect – arise from the synthetic concept of truth. Related to these aspects, (i) the role of the predicate of truth in the concept of truth is analysed, (ii) Tarski’s definition of truth and its role in the concept of truth are analysed, and (iii) the position of the paradoxes of truth in the concept of truth is analysed.