Ueber den Nothwendig-Existirenden.--Ueber den Modus des Hervorgehns der Dinge aus ihm.--Ueber die Schöpfung der Welt.

A fully vocalized abridgement of Hovot ha-levavot.

[1] Shaʻar ʻavodat ha-Eloḳim -- [2] Shaʻar ha-beḥinah. Shaʻar Yiḥud ha-maʻaśeh -- [3] Shaʻar ha-biṭaḥon 1-2.

[1] Shaʻar ha-biṭaḥon -- [2] Shaʻar yiḥud ha-maʼaśeh -- [3] Shaʻar ha-keniah --.

Maʼamarim she-hevi ha-Ḥo. ha-l. be-shem aḥerim -- Maʼamarim she-katav ha-Ḥo. ha-l. be-ʻatsmo.

Joseph Ibn Kaspi was a prolific writer in one of the most productive periods in the history of Jewish philosophy. Joseph Ibn Kaspi: Portrait of a Hebrew Philosopher in Medieval Provence investigates his overarching intellectual project and important themes in his writings.

In this article, we report the discovery of a new type of astronomical almanac by Joseph Ibn Waqār (Córdoba, fourteenth century) that begins at second station for each of the planets and may have been intended to serve as a template for planetary positions beginning at any dated second station. For background, we discuss the Ptolemaic tradition of treating stations and retrograde motions as well as two tables in Arabic zijes for the anomalistic cycles of the planets in which (...) the planets stay at first and second stations for a period of time (in contrast to the Ptolemaic tradition). Finally, we consider some medieval astrological texts where stations or retrograde motions are invoked. (shrink)

In an influential article, A. I. Sabra identified an intellectual trend from twelfth and thirteenth-century Andalusia which he described as the ‘‘Andalusian revolt against Ptolemaic astronomy.” Philosophers such as Ibn Rushd, Ibn Tufayl, and Maimonides objected to Ptolemy’s theories on philosophic grounds, not because of shortcomings in the theories' predictive accuracy. Sabra showed how al-Bitrūjī's Kitāb al-Hay'a attempted to account for observed planetary motions in a way that met the philosophic standards of those philosophers and others. In Nūr al-‘ālam, the (...) subject of this article, Joseph ibn Joseph ibn Nahmias endeavoured to improve upon al-Bitrūjī’s models. Levi Ben Gerson's Hebrew writings on astronomy criticized al-Bitrūjī, but Ibn Nahmias did not mention them. Nūr al-‘ālam deserves attention, too, because it is the first Arabic text on theoretical astronomy by a Jewish author to come to light. In the body of this article, I will describe and analyze Ibn Nahmias’ theory, from Nūr al-‘ālam, for the motion of the sun. (shrink)

Study of a fascinating medieval Jewish philosopher, focusing on his twin conceptions of history. The philosopher and biblical commentator Joseph Ibn Kaspi (1280–1345) was a provocative Jewish thinker of the medieval era whose works have generally been overlooked by modern scholars. Power and Progress is the first book in English to focus on a central aspect of his work: Ibn Kaspi’s philosophy of history. Alexander Green argues that Ibn Kaspi understood history as guided by two distinct but interdependent forces: (...) power and progress, both of which he saw manifest in the biblical narrative. Ibn Kaspi discerned that the use of power to shape history is predominantly seen in the political competition between kingdoms. Yet he also believed that there is historical progress in the continuous development and dissemination of knowledge over time. This he derived from the biblical vision of the divine chariot and its varied descriptions across different biblical texts, each revealing more details of a complex, multifaceted picture. Although these two concepts of what drives history are separate, they are also reliant upon one another. National survival is dependent on the progress of knowledge of the order of nature, and the progress of knowledge is reliant on national success. In this way, Green reveals Ibn Kaspi to be more than a mere commentator on texts, but a highly innovative thinker whose insights into the subtleties of the Bible produced a view of history that is both groundbreaking and original. “Controversial in his day, and often denounced, Ibn Kaspi has fallen off the radar of contemporary scholarship. I know of one book in Hebrew, one old study from a generation ago in English (and a new book about which I learned from this book, but have not yet seen), and occasional passing comments in standard histories. There is thus plenty of room for this book and it will, I judge, stimulate further studies on Ibn Kaspi by others.” — Menachem Kellner, Shalem College. (shrink)

La question de la prophétie naturelle et scripturaire a attiré l’attention des chercheurs du monde islamique et de la chrétienté tout au long de la période médiévale. Elle s’inscrivait dans le cadre de la question de l’authenticité et donc de la validité des messages de ceux qui sont considérés comme prophètes dans la tradition musulmane et judéo-chrétienne. L’article commence par un bref résumé des doctrines d’Ibn Sīnā, Mūsā b. Maymūn et Thomas d’Aquin sur la question de la prophétie, suivi d’une (...) identification des questions sur lesquelles ils sont d’accord ou divergent considérablement. Les positions prises par chacun des trois chercheurs ont été fortement influencées par les traditions religieuses auxquelles ils appartenaient. (shrink)