It has been generally recognized by students of the mediæval drama, that certain of the moral tales found in collections of exempla and in commonplace books influenced indirectly the morality play. This inference seems to be drawn as much from evidence of the dramatic possibilities inherent in specific exempla as from evidence of their widespread popularity. An example of a didactic story with such dramatic adaptability is offered by the tale of the penitent usurer. Its theme, the struggle between demons and angels for the soul of man, seems to foreshadow the conflict-between-the-vices-and-virtues type of morality. The number of mss., moreover, which have survived, proves that the tale was disseminated throughout England and the Continent, and therefore would be easily accessible to playwrights in search of dramatic material. Furthermore, the same inference may be drawn from the analogy between plays embodying favorite miracles or fabliaux and morality plays probably based upon popular exempla. For, although no scholar has hitherto shown the dependence of any extant morality play upon a specific exemplum, yet it is almost inconceivable that well-known didactic tales, obviously suited to dramatic purposes and extensively circulated in collections of exempla and in commonplace books, should not have been used by the makers of moral plays.