The ultimate law of language is, dare we say, that nothing can ever reside in a single term. This is a direct consequence of the fact that linguistic signs are unrelated to what they designate and that, therefore, 'a' cannot designate anything without the the aid of 'b' and vice versa, or, in other words, that both have value only by the difference between them.
Ferdinand de SaussureThe business, task or object of the scientific study of languages will if possible be 1) to trace the history of all known languages. Naturally this is possible only to a very limited extent and for very few languages.
Ferdinand de SaussureIn fact, from then on scholars engaged in a kind of game of comparing different Indo-European languages with one another, and eventually they could not fail to wonder what exactly these connections showed, and how they should be interpreted in concrete terms.
Ferdinand de SaussureIt is useful to the historian, among others, to be able to see the commonest forms of different phenomena, whether phonetic, morphological or other, and how language lives, carries on and changes over time.
Ferdinand de Saussure