Grammars would lead us to suppose that words have a fixed form and sound. Lexicons assign to each word a definite meaning or meanings. They both tend to obscure the fact that the sentence precedes the word and that all language is relative. (1) It is relative to its own context. Its meaning is modified by what has been said before and after in the same or in some other passage: without comparing the context we are not sure whether it is used in the same sense even in two successive sentences. (2) It is relative to facts, to time, place, and occasion: when they are already known to the hearer or reader, they may be presupposed; there is no need to allude to them further. (3) It is relative to the knowledge of the writer and reader or of the speaker and hearer. Except for the sake of order and consecutiveness nothing ought to be expressed which is already commonly or universally known. A word or two may be sufficient to give an intimation to a friend; a long or elaborate speech or composition is required to explain some new idea to a popular audience or to the ordinary reader or to a young pupil. Grammars and dictionaries are not to be despised; for in teaching we need clearness rather than subtlety. But we must not therefore forget that there is also a higher ideal of language in which all is relative—sounds to sounds, words to words, the parts to the whole—in which besides the lesser context of the book or speech, there is also the larger context of history and circumstances.