The Book of the World: A Parallel Hebrew-English Critical Edition of the Two Versions of the Text (Abraham Ibn Ezra's Astrological Writings, Vol. 2) Abraham Ibn Ezra Edited, Translated and Annotated by: Shlomo Sela The present volume offers the first critical edition of the Hebrew text of the two versions of Ibn Ezra's The Book of the World, accompanied by an English translation and a commentary. These twin treatises represent the first Hebrew work, unique in medieval Jewish science, to discuss the theories and techniques of historical and methodological astrology that had accumulated from antiquity to Ibn Ezra's time, on the basis of Greek, Hindu, Persian, and Arabic sources. This volume also incorporates the first critical edition, translated and annotated, of Mash'allah's Book on Eclipses. A work dealing with mundane astrology whose Hebrew translation was ascribed to en Ezra, as well as a study of three brief texts in which Ibn Ezra conveyed his own opinion about mundane astrology. Shlomo Sela is a lecturer in the Department of Jewish Philosophy and Bible at Bar-Ilan University. His research focuses on Jewish Attitudes toward the sciences, with special interest in the history of astrology in the Middle Ages. He is the author, editor and annotator of Abraham Ibn Ezra: The Book of Reasons, A parallel Hebrew-English Critical Edition of the Two Versions of the Text (Brill 2007). With this volume he begins the publication of Ibn Ezra's complete works on astrology.