If I am right in my reading of this complicated problem the mise-en-scène of the Grail story was originally a loan from a ritual actually performed, and familiar to those who first told the tale. This ritual, in its earlier stages comparatively simple and objective in form, under the process of an insistence upon the inner and spiritual significance, took upon itself a more complex and esoteric character, the rite became a Mystery, and with this change the rôle of the principal actors became of heightened significance. That of the Healer could no longer be adequately fulfilled by the administration of a medicinal remedy; the relation of Body and Soul became of cardinal importance for the Drama, the Medicine Man gave place to the Redeemer; and his task involved more than the administration of the original Herbal remedy. In fact in the final development of the story the Pathos is shared alike by the representative of the Vegetation Spirit, and the Healer, whose task involves a period of stern testing and probation.
If we wish to understand clearly the evolution of the Grail story we must realize that the simple Fertility Drama from which it sprung has undergone a gradual and mysterious change, which has invested it with elements at once 'rich and strange,' and that though Folk-lore may be the key to unlock the outer portal of the Grail castle it will not suffice to give us the entrance to its deeper secrets.
While having no connection with the main subject of our study, the Grail legend, I should like to draw the attention of students of Medieval literature to the curious parallel between the Rig-Veda poem of the Medicine Man or Kräuter-Lied as it is also called, and Rusteboeuf's Dist de l'Erberie. Both are monologues, both presuppose the presence of an audience, in each case the speaker is one who vaunts his skill in the use of herbs, in each case he has in view the ultimate gain to himself. Here are the opening lines of the Medieval poem:[1]
"Seignor qui ci estes venu Petit et grant, jone et chenu, Il vos est trop bien avenu Sachiez de voir; Je ne vos vueil pas deçevoir Bien le porroz aperçevoir Ainz que m'en voise. Asiez vos, ne fetes noise Si escotez s'il ne vos poise Je sui uns mires."