A process of linguistic redefinition is underway, and it is the aim of this volume to contribute to that process, explain why a redefinition is needed, and how it should proceed. In the case of linguistics the subject is also the subject matter. Many linguists have ignored the problem of definition, simply regarding linguistics as the 'science of language itself'. What, though, is 'language itself'? Is it a language, ie English, Swahili? Or, language in a more general sense? The primary goal of a redefinition of linguistics should be to demonstrate that language is not an objective matter. Linguistics is, and should be, the study of whatever is linguistically pertinent.