Patronage, cultural politics and the marginalization of astrology in seventeenth-century France: the case of J.-B. Morin and of his polemics with Pierre Gassendi and his circle

Abstract During the transition from the early to the modern era, the marginalization of astrology from the learned world marked a significant shift. The causes of this phenomenon are complex and still partially obscure. For instance, some sociological interpretations have linked it to a broader shift in mentality among the gentry and bourgeoisie, while other scholars attributed the decline to the emergence of the ‘new science’. Focusing on the case of Jean-Baptiste Morin (1583–1656), this paper examines the changing dynamics of patronage for what has been termed ‘the last official astrologer’. It demonstrates that Morin's appointment as professor of mathematics at the Collège royal and his prominence within the French court were expressions of a cultural politics in which his patrons were deeply invested. Conversely, Morin's efforts to restore astrology lent validation to the belief systems of his patrons. The paper further analyses Morin's fall from grace during his polemics with Gassendi and his circle, highlighting the political context of the Fronde and a growing public weariness regarding the relationship between politics and astrology. Ultimately, this case study reveals that in the French context, the marginalization of astrology was not solely determined within the ‘learned jurisdiction’. Instead, the shifting cultural and political investments of the ruling classes played a significant role.