Abstract

Mersenne presented Descartes with a series of objections to the Meditations. A careful analysis of these objections can throw light on the theological context in which those criticisms were grounded. Mersenne’s objections reproduce theses already advanced in the Quaestiones celeberrimae in Genesim. In this work, in which he intended to refute Vanini, Mersenne used some proofs of the existence of God derived from the Jesuit Lessius, and already used by Vanini himself. These same proofs, together with others developed by Mersenne, were then taken up by the free thinker Pierre Petit. A reconstruction of the origin of the arguments used by Mersenne can provide important elements to evaluate the interweaving of apologetic and heterodox literature in the first half of the 17seventeenth century and to discuss Leo Strauss’s proposal to “read between the lines.”