Languages of the World: A Critical Introduction introduces the readers to the various languages and explains them the evolution of these languages. It discusses the rationale of languages and the various frameworks that may be employed in the development of languages. Also discussed in the book are the formal symbolic systems in the field of language, an overview of sociolinguistics and the various typologies of languages. The book also provides insights on the grammaticalization of language and gives some concluding remarks on the whole subject of the languages around the world.