The moralities, however, on the whole, made little advance, either in escape from conventionality, or in creation of structure, or in dramatic expression of the conflicts of will. They clung in the main to the dominant and already conventionalized allegory of the Middle Ages, the presentation of life as a conflict of body and soul, although they made interesting excursions into the fields of pedagogy and religious controversy. This allegory they treated with intense didacticism, sacrificing all dramatic interest to enforce the lesson, though in their later days the sermons were very generously mixed with farce. Their importance and explicit contribution to English tragedy arose from their historical position just at the close of the fifteenth and the beginning of the sixteenth century. They then served as a transition species, conforming, by a reduction in length and in the number of actors, to the conditions of performance which marked the change from the medieval stage to the Elizabethan theatre; amalgamating under humanistic influence now with this type of play, now with that; and imposing for a time their distinctive form and methods on the emerging types of comedy and tragedy. Some of the earliest tragedies, as we shall see, were direct developments from the moralities, and the influence of the peculiarities of the morality was for a while definite and considerable. But it soon disappeared under the demands of a new theatre and the innovations of a new art. The inheritance of tragedy from the Middle Ages includes an important legacy from literature entirely apart from the drama. In the separation of the medieval world from the classic, the terms tragedy and comedy ceased to be connected with scenic presentation, and were extended to cover all forms of narrative, whether in dialogue or not. The distinction between the two, though varying somewhat in the different lexicographers and encyclopedists, gradually arrived at an agreement which continued to affect ideas throughout the Renaissance. There was some insistence on the restrictions that tragedy dealt with history, and comedy with fiction; tragedy with exiles, murders, important and horrible deeds, and comedy with more domestic themes or with love and seduction. There was more general agreement that tragedy dealt with persons of rank and importance, kings or great leaders, and comedy with persons of low or middle rank, and that tragedy required a more elevated and ornamented style than comedy. The most important difference, however, was held to lie in the distinction that comedy begins unhappily and proceeds to a happy conclusion, while tragedy begins prosperously and ends miserably and terribly. Thus Dante's poem was a Divine Comedy, and Chaucer in the Monk's Prologue summed up the accepted opinion of the scholarship of his day.