The question of the origin of this habit of allegorising and personification is one which has been often incidentally discussed by literary historians, but which has never been exhaustively treated. It is certain that, at a very early period in the middle ages, it makes its appearance, though it is not in full flourishing until the thirteenth century. It seems to have been a reflection in light literature of the same attitude of mind which led to the development of the scholastic philosophy, and, as in the case of that philosophy, Byzantine and Eastern influences may have been at work. Certain it is that in some of the later Greek romances[85], something very like the imagery of the _Roman de la Rose_ is discoverable. Perhaps, however, we need not look further than to the natural result of leisure, mental activity, and literary skill, working upon a very small stock of positive knowledge, and restrained by circumstances within a very narrow range of employment. However this may be, the allegorising habit manifests itself recognisably enough in French literature towards the close of the twelfth century. In the _Meraugis de Portlesguez_ of Raoul de Houdenc, the passion for arguing out abstract questions of lovelore is exemplified, and in the _Roman des Eles_ of the same author the knightly virtues are definitely personified, or at least allegorised. At the same time some at all events of the Troubadours, especially Peire Wilhem, carried the practice yet further. _Merci_, _Pudeur_, _Loyaute_, are introduced by that poet as persons whom he met as he rode on his travels. In Thibaut de Champagne a still further advance was made. The representative poem of this allegorical literature, and moreover one of the most remarkable compositions furnished by the mediaeval period in France, is the _Roman de la Rose_[86]. It is doubtful whether any other poem of such a length has ever attained a popularity so wide and so enduring. The _Roman de la Rose_ extends to more than twenty thousand lines, and is written in a very peculiar style; yet it maintained its vogue, not merely in France but throughout Europe, for nearly three hundred years from the date of its commencement, and for more than two hundred from that of its conclusion. The history of the composition of the poem is singular. It was begun by William of Lorris, of whom little or nothing is known, but whose work must, so far as it is easy to make out, have been done before 1240, and is sometimes fixed at 1237. This portion extends to 4670 lines, and ends quite abruptly. About forty years later, Jean de Meung, or Clopinel, afterwards one of Philippe le Bel's paid men of letters, continued it without preface, taking up William of Lorris' cue, and extended it to 22,817 verses, preserving the metre and some of the personages, but entirely altering the spirit of the treatment. The importance of the poem requires that such brief analysis as space will allow shall be given here. Its general import is