The distinction between artifact and tool is introduced into the study of language diversity and the posting of linguistic universals. A complicating factor in all language investigations is the use of language as the chief tool to create new language. Analogy and metaphor are considered as two major creative forces at work in all languages. Understanding how these creative forces operate leads to an explanation of linguistic diversity within the framework of universals. If we wish to do more than chart linguistic diversity, we shall have to move to a consideration of innate creative forces. (Author)