Literary analysis and theological interpretation of Catholic, University of Paris chancellor Jean Gerson's (d. 1429) Donatus moralizatus and Muslim, Sufi scholar ¿Abd al-Kar¿m al-Qushayr¿'s (d. 1072) Näw al-qul¿b. Argues that the genre of these two religious texts aims to engender saintly readers and uses grammar as metaphor for spiritual realities.