This document discusses different perspectives on the concept of language. It contrasts the view of language in linguistics with more everyday understandings. In linguistics, language is studied through examining its universal properties, using both natural languages like English as well as artificial example languages. These artificial languages demonstrate properties like vocabulary, syntax and semantics. However, they lack meaningful relationships to the real world. Natural languages relate symbols to the world through truth conditions and can be used to make statements that are true or false. The document introduces the sociolinguistic perspective, which studies language use in its social contexts.