Descartes criticized all philosophy prior to his because “no single thing is to be found in it which is not subject to dispute, and in consequence which is not dubious.” Explain whether this criticism...

Descartes criticized all philosophy prior to his because “no single thing is to be found in it which is not subject to dispute, and in consequence which is not dubious.” Explain whether this criticism applies to Descartes’ own philosophy and to his own views about God. Why would Descartes have felt that his philosophy was immune from his criticism?