Since most subjects studied in school consist largely of theories... language education must include not only the serious study of what truth and falsehood mean in the context of a subject, but also what is meant by a fact, an inference, an assumption, a judgment, a generalization... In this way students will be learning both the language of a subject and the methods of inquiry in that subject, since inquiry consists of nothing else but the generation of questions, the invention of definitions and metaphors, the separation of facts from inferences, the forming of generalizations...

Language Education in a Knowledge Context (1980)