This article aims to present the Coimbra Commentaries as a critical source of the Cartesian Meditations. The Cursus Conimbricensis played an important role in shaping the philosophical pedagogy of the seventeenth century, and many modern scholars were formed through the pages of these volumes. Although we do not know for sure whether the Coimbra Commentaries were used as textbooks in La Flèche, there are solid reasons for believing that, when Descartes refers to the possibility of divine deception in the first (...) meditation, he is using some examples taken from the Commentary on Physics written by Manuel de Góis. (shrink)