More on Illuminated Doctor from Infoplease:

• Illuminated Doctor - Illuminated Doctor Raymond Lully (1235-1315). John Tauler, the German mystic (1294-1361). Source: ...
• Schoolmen - Schoolmen Certain theologians of the Middle Ages; so called because they lectured in the cloisters ...
• Dictionary of Phrase and Fable: I - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "I"