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Philosophy of language is concerned with four central problems: the nature of meaning, language use, language cognition, and the relationship between language and reality. For continental philosophers, however, the philosophy of language tends to be dealt with, not as a separate topic, but as a part of logic (see the section "Language and continental philosophy" below). First and foremost, philosophers of language prioritize their inquiry on the ''nature'' of meaning. They seek to explain what it means to "mean" something. Topics in that vein include the nature of synonymy, the origins of meaning itself, and how any meaning can ever really be known. Another project under this heading of special interest to analytic philosophers of language is the investigation into the manner in which sentences are ''composed'' into a meaningful whole out of their meaningful ''parts''; and how or if the meanings of such complexes are derived from the meanings of parts thereof. Secondly, they seek to better understand what speakers and listeners do with language in communication, and how it is used socially. Specific interests may include the topics of language learning, language creation, and speech acts. Thirdly, they would like to know how language relates to the minds of both the speaker and the interpreter. Of specific interest is the grounds for successful translation of words into other words. Finally, philosophers of language investigate how language and meaning relate to truth and the world. They tend to be less concerned with which sentences are ''actually true'', and more with ''what kinds of meanings can be true or false''. A truth-oriented philosopher of language might wonder whether or not a meaningless sentence can be true or false, or whether or not sentences can express propositions about things that do not exist, rather than the way sentences are used. ==Major topics and sub-fields== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Philosophy of language」の詳細全文を読む スポンサード リンク
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