Semantics is a part of logic that examines the relations between language objects or terms and their referents. In this realm, such concepts as tIuth, denotation, definition, name, reference and so on are analyzed.In the present article the formation of semantics, its origin, the obstacles in its way, and its historical development will be discussed. Since the discussion about the concept of truth and "the meaning effective predicate" is situated in the center of semantic investigation, and because it was in Poland that Twardowski and his students began research about the concept of truth during 1900-1930, so it is necessary to have a short account of the history of truth in Poland at the beginning of the article. Then Hilbert's attempts in metamathematics and particularly his considerable method in the analysis of metamathematical concepts will be discussed.Finally, there will be a report about the synthesis of truth and Hilbert method in the mind of Lesniewski and Tarski.Vienna Circle’s positivist thinkers opposition to Tarski's views regarding semantic analysis of truth, how Ca/'nap is convinced by Tarski in this field, and also the extension of semantics in these arguments and £n the explanatory essays of Carnap and Tarski are the subjects which have been discussed briefly at the end of this essay.