This volume makes readily available for the first time a critical edition of The Doctrine of the Hert, the fifteenth-century English translation of De doctrina cordis, a thirteenth-century Latin devotional treatise addressed to nuns. A religious bestseller, the Doctrina circulated throughout Europe between the thirteenth and fifteenth centuries and was translated into six different languages. The Doctrina progressively pairs the seven gifts of the Holy Spirit with seven key actions of the heart, leading readers toward contemplative unity with God. Despite its medieval popularity, the Doctrina has largely escaped the attention of scholars until recently. Exeter's edition offers a full textual commentary, while its introduction not only examines current thinking upon the Doctrina's authorship and envisaged primary audience, but also takes advantage of recent scholarly breakthroughs in the understanding of late medieval female spirituality.