Introduction Linguistics has both practical and philosophical motivations. So both the first and second editions of this text were directed toward students of many (1) . This third edition continues and further develops this approach. We have aimed to dispel a number of myths about language and to discuss the various aspects of language from both an (2) and current point of view. Part one is "The Nature of Human Language. " Then we discuss speech sounds or (3) and includes a passage on machines that "talk" and "understand". On phonology we demonstrate how sounds form (4) . Because of this, written forms of language are very late in the history of human language. Then we discuss other (5) aspects of language how words are formed; what words, phrases, and sentences mean; and how words are put together to form sentences. Morphology, semantics, syntax are very important in our discussion and take an important role. In "Social Aspects of Language, " we consider language in (6) and how languages change over time. In "The (7) Aspects of Language, "we talk about child language, animal communication systems and brain (8) underlying language knowledge and use. Also, the (9) languages of the deaf are discussed in greater detail. The newest findings on whether chimpanzees and gorillas can learn language are presented. In every lesson the (10) underlying the diversity of phenomena observed in human language are highlighted.