Theories and Schools of LinguisticsAn IntroductionIntroduction: Language and Linguistics Language: Language is an open system of highly polysemous articulated signs to express meanings. -Saussure Language is a purely human and non-instinctive method of communicating ideas, emotions, and desires by means of a system of voluntarily produced symbols. -SapirIntroduction: Language and Linguistics From now on I will consider a language to be a set (finite or infinite) of sentences, each finite in leng