Many people speak of languages as easy or difficult, meaning that it is easy or difficult to learn these languages, though people do not usually talk about their own mother tongues as being easy or difficult to use. ... Languages are not only used to transfer information from one individual to another but also to indicate and to preserve social disctinctions.
――西南学院大学 文学部英文・外国語学科(2月2日実施)――2005年