Bernard Bouttes first shows, in « Descartes in the Maze », that the cartesian system encounters a difficulty for which no way out is possible, and then undertakes a critical analysis of Jean-Luc Marion’s reading of Descartes.Gérard Granel opens by a platonician prologue his questioning which aims to bring to the fore the self-acting character of knowledge in the cartesian sense, and show that something, in Descartes’s position, exceeds the classical relationship between metaphysics and mathematics.