Edebiyat, farklı coğrafyalardaki dünya görüşlerinin, toplumsal değerlerin, duyguların, düşüncelerin ve imgelerin anlatımıdır. Modern dünyanın edebiyata yansımaları 19. yüzyıldan başlayarak, 20. yüzyılda daha da belirginleşmiş olup; insan ilişkilerinde yaşanılan ayrışımlar, zamanla insanların birbirine karşı yabancılaşmasını da beraberinde getirmiştir. Bireyin yaşadığı yabancılaşma sadece karşısında duran kişiye karşı değil, aynı zamanda kendi benliğine karşı da olmuştur. Bu durumun sonucu olarak bireyin, hem kendisiyle hem de başkasıyla yaşadığı kimlik arayışı edebiyatın en önemli konularından biri olmuştur. Bu konuların ifade edilmesi esnasında yazarlar bazı kavram, imge ve metaforları kullanır. Kullanılan bu kavramların en dikkati çeken, bir kişinin birebir aynı görüntüsünü ifade eden, edebi metinlerde de sıklıkla bireyin yaşadığı kimlik karmaşasını ve yabancılaşmayı anlatmak için kullanılan Alman edebiyatı kökenli “Doppelgänger” kavramıdır. “Doppelgänger”, Türkçede “gölge”, “kötü ikiz”, “ikiz öteki”, “öteki”, “eş ruh”, “ikili kahraman” terimleri ile karşılık bulur.

The literary history, as I conceive it, is an account of one strand, so to speak, in a very complex tissue: it is connected with the intellectual and social development; it represents movements of thought which may sometimes check and be sometimes propitious to the existing forms of art; it is the utterance of a class which may represent, or fail to represent, the main national movement; it is affected more or less directly by all manner of religious, political, social, and economical changes; and it is dependent upon the occurrence of individual genius for which we cannot even profess to account. I propose to take the history of English literature in the eighteenth century. I do not aim at originality: I take for granted the ordinary critical judgments upon the great writers of whom so much has been said by judges certainly more competent than myself, and shall recall the same facts both of ordinary history and of the history of thought. What I hope is, that by bringing familiar facts together I may be able to bring out the nature of the connection between them; and, little as I can say that will be at all new, to illustrate one point of view, which, as I believe, it is desirable that literary histories should take into account more distinctly than they have generally done.

Postmodern literature and arts are not novel and pure, rather they represent and present a great challenge. They create an active medium for their followers as Roland Barthes tags postmodernism writerly “in that the reader frequently has to fill in gaps in the narrative, thus, in Barthes’ terms of reference, becoming part of the production of the textual meaning. Postmodern texts and arts enforce a sort of invention, imagination, and suspension for the reader. Postmodern literary fashion does not provide a fixed cultural status quo, yet it undermines the authority of an omniscient narrator and his dominance over the textual meaning. These features and many others that you will find throughout each chapter in this book make postmodern texts and art much more pleasurable and rewarding to study.