The discussion of the four categories of ending and closure in modern Arabic literature in terms of openness and closedness clearly indicates the interrelations between the ending and the model of the textual reality, and the interrelations between this model and the extra-literary reality. It seems that when the historical, and especially the political and the social reality slaps writers across the face and stands before them in all its might and immediacy, they do not remain indifferent and write a literature with optimistic, promising, and closed endings; and vice versa a text with a model of reality which does not relate to a well defined piece of history ends with a more open type of ending and becomes a closure in the reader.