All these reasons for doubt are laid out quite succinctly in #Descartes' _Méditations métaphysiques_ and it's worth reading that section from the original at least. The Wikipedia entry is pretty good too #Phonks #Philosophyreads (a thread 20/?): https://fr.wikipedia.org/wiki/M%C3%A9ditations_m%C3%A9taphysiques#Les_arguments_en_faveur_du_doute

His single method of conducting science is at work throughout many of #Descartes' early publications. His _Traité du monde et de la lumière_ is a notable example, even though it precedes his _Discours de la méthode_, his first proper engagement with #Philosophy.
#Phonks #Philosophyreads (a thread 8/?)