Exploration of the Arabic psychological theory underlying Piers Plowmanand the interpretive insights this offers. The psychology underlying Passus 8-20 of Piers Plowmanremains unexplored in its entirety, despite single articles on separate psychological personifications. Professor Kaulbach aims to remedy this huge gap in our understanding of Langland's poem, by adducing a psychology which not only illuminates previously mysterious relations between psychological actants, but also reveals that many apparently non-psychological figures (Piers Plowman, for example) are best explained by reference to psychological theory. The body of psychological theory on which the author draws is that of Arabic, specifically Avicennan theory of the prophetic mental act, the `vis imaginativa' or `ymaginatif' in Middle English. Beyond the original interpretative insights offered by this book Professor Kaulbach also describes the intellectual and manuscript context in which Arabic psychology was made available to a late fourteenth century English poet. ERNEST N. KAULBACHis Associate Professor of English, Classics and (occasionally) Philosophy at the University of Texas at Austin.

In the 12th century the "Book of the Soul" by the philosopher Avicenna was translated from Arabic into Latin. It had an immense success among scholastic writers and deeply influenced the structure and content of many psychological works of the Middle Ages. The reception of Avicenna's book is the story of cultural contact at an imipressively high intellectural level. The present volume investigates this successful reception using two approaches. The first is chronological, tracing the stages by which Avicenna's work was accepted and adapted by Latin scholars. The second is doctrinal, analyzing the fortunes of key doctrines. The sense of the original Arabic text of Avicenna is kept in mind throughout and the degree to which his original Latin interpreters succeeded in conveying it is evaluated.

This is the first extensive account of philosophical psychology of perception from ancient to early modern times. The book aims to shed light on the developments in the theories of sense-perception in medieval Arabic and Latin philosophy, their ancient background and traditional and new themes in early modern thought. Particular attention is paid to the philosophically significant parts of the theories. The articles concentrate on the so-called external senses and related themes.