Descartes and Morin: the existence of God demonstrated in geometrical fashion

I analyze the relations between Descartes and Morin, mostly about their respective proofs for the existence of God. I do so in three stages: (1) Morin and Descartes, from their first meetings in the mid-1620s to Morin’s objections to Descartes’s Discourse on Method in 1638. (2) Descartes’s criticism of Morin’s treatise That God Exists in 1641 and Morin’s implicit reply to that criticism in the second edition of the work (1655). (3) Morin’s counter-objections, in his posthumously published Astrologia Gallica (1661), to Descartes’s Replies to the Objections to the Meditations. The examination of Morin’s work and his criticism of Descartes can serve two basic purposes, since they are an integral part of Descartes’s context and since they form a good basis for understanding his reception. They can advance our understanding of Descartes’s philosophy, but they need not do so: Morin does not have to be a good reader of Descartes. On the other hand, the examination should reveal something about Morin’s deeper philosophical commitments.