The emphasis on inner speech in learning a language reveals the importance of literature in acquiring a foreign
language. Inner speech is actually "internalized social speech;" it is "the most powerful tool of thought mediation."
In fact, this theory believes that "children first engage in and then internalize the verbal practices of the community"
(de Guerrero, 2005: xii). Literature is a good source for English language learners to develop inner speech. It is
literature that provides them the source for internalization of various verbal practices of the community, and the
learner is enabled to "think words" and to be engaged in mental rehearsal and internal self-talks. Therefore, literature
encourages more thoughtful and purposeful language learning. It exposes the learners to the real use of language.
Actually, literature helps in transition from teacher-centered English classrooms to student-centered ones as learners
have to work in groups. In fact, literature enables students to work productively in teams and it is the learning goal
of a great deal of teaching programs. McGee (1996) believes that group conversations about literature give students
insights and understandings that they cannot create alone. In their group working, they have to both share their
perception and support and negotiate their opinions with each other, the point which increases their level of
reasoning and critical thinking