Descartes How does Descartes try to extricate himself from the sceptical doubts that he has raised? Does he succeed? by Tom Nuttall [All page references and quotations from the Meditations are taken from the 1995 Everyman edition] In the Meditations, Descartes embarks upon what Bernard Williams has called the project of 'Pure Enquiry' to discover certain, indubitable foundations for knowledge. By subjecting everything to doubt Descartes hoped to discover whatever was immune to it. In order to best understand how and why Descartes builds his epistemological system up from his foundations in the way that he does, it is