In one of the contributions to this edited volume an interviewee argues that "English is power". For researchers in the field of English Studies this raises the questions of where the power of English resides and which types and practices of power are implied in the uses of English. Linguists, scholars of literature and culture, and language educators address aspects of these questions in a wide range of contributions. The book shows that the power of English can oscillate between empowerment and subjection, on the one hand enabling humans to develop manifold capabilities and on the other constraining their scope of action and reflection. In this edited volume, a case is made for self-critical English Studies to be dialogic, empowering and power-critical in approach.