Recent students of late medieval intellectual history have treated Oxford theologians' Sentences lectures from the 1320s to 1330s as revealing the interface of the theological, logical, and scientific thinking characteristic of a historically momentous ‘New English Theology’. Its conceptual achievement, historians generally concur, was the casting off of the speculative metaphysics of such thirteenth-century authors as Robert Grosseteste and Roger Bacon; its methodological novelty made it akin to twentieth-century analytic philosophy and seminal for the early Scientific Revolution. Yet the metaphysically (...) cast thirteenth-century sciences of perspectiva and astrologia persisted among scholars long into the early modern period. To show how this apparent paradox may be dissolved, this article details the intersection of thirteenth-century metaphysics and fourteenth-century analysis in the lectures of a controversial and influential proponent of the Oxford theology of the 1330s. (shrink)

In the 1480s Dominican humanist Filippo de’ Barbieri published an illustration of a supposedly ancient female seer called the ‘Sybilla Chimica’, whose prophetic text repeated the words of the ninth-century astrologer Abu Ma‘shar. In tracing the origins of Barbieri’s astrological Sibyl, this article examines three sometimes interlocking traditions: the attribution of an ante-diluvian history to the science of the stars, the assertion of astrology’s origins in divine revelation, and the belief in the ancient Sibyls’ predictions of the birth of Christ (...) and other Christian truths. Medieval authors from the twelfth century on began to cite these traditions together, thereby simultaneously authorizing the use of astrology to predict religious changes and blurring the categories of natural and supernatural as applied to human understanding. This blending of astrology and prophecy appears notably in works by such authors as John of Paris, John of Legnano, Johannes Lichtenberger, and Marsilio Ficino. Ultimately the trajectory that produced Barbieri’s astrological Sibyl would lead to a wave of astrological apocalyptic predictions in the sixteenth and seventeenth centuries, as well as to the harnessing of astrology for the defense of the faith in the form of an astrological natural theology, sacralizing science as well as nature. (shrink)

This study reassesses the occult philosophy of the British polymath John Dee. Focusing on his treatise Monas hieroglyphica and his notorious angelic conversations in the 1580s, it describes Dee’s philosophical career as a continuous search for a language which could yield knowledge of both nature and God. Situating Dee’s philosophy in the context of early modern “symbolic exegesis”, a group of discursive practices aimed at uncovering the creative principles of God by means of language, the study is an attempt to (...) show how Dee’s seemingly divergent interests were interrelated. In Monas hieroglyphica he treated such disciplines as grammar, biblical exegesis, kabbalah, astronomy, alchemy, and mathematics as grounded on a common foundation, identical to the Word of God. By conceiving a graphical symbol, expressing God’s Word in visual form, Dee believed that he could bring these sciences to perfection. In the later angelic conversations, Dee’s aim was to recover the language spoken by the prelapsarian Adam. The Adamic language was conceived of as representing accurately God’s creative Word, and Dee’s recovery of this tongue would ultimately result in a complete restitution of both religion and knowledge. Dee’s works provide an example of how metaphoric associations between the Word of God, language, nature and the human soul could be exploited in Renaissance occult thought. Such metaphoric associations had an important role in shaping and legitimizing early modern views of symbolism, mysticism, and magic. Relying on Dee’s own sources, many of which still survive with his annotations, this study tries to reconstruct Dee’s search for the perfect language, while simultaneously stressing the syncretistic character of his views. (shrink)

Thomas Bradwardine's theological treatise De Causa Dei provides a valuable source for late medieval views on the relationship between science and religion. Bradwardine, who can be seen as belonging in a tradition deriving from Roger Bacon, was strongly impressed by the impotence of human reason in dealing with an apparent infinitude of facts, and accordingly stressed both ancient authority and prophetic revelation as appropriate sources of scientific knowledge. Two particularly important ancient works for him were the pseudo-Aristotelian Secretum Secretorum and (...) De Mundo. The latter led him to an arresting image of the universe as a magnetically driven clock. (shrink)