Aspects of language instruction which "derive from the nature of language itself" are discussed in this study. The notion that language teachers should teach grammar exclusively is disputed. This position is based on the following generalizations presented in an analysis of the nature of grammar and language: (1) language comprises more than what is usually considered to be its grammar; (2) grammar is what is systematic, ordered, and formal in language viewed as artifact; (3) language is not only an artifact but a tool of man's linguistic creativity as well; (4) grammatical rules are like filters which protect the speaker from being overwhelmed with thoughts and sensations and which enable him to be selective in what he wishes to discuss; (5) the form of every sentence a speaker utters is affected by the determination of what is old and new information; and (6) although language is extremely important in holding societies together, its prime function is that of personal expression. (Author/RL)