Modern philosophy : is a discipline that focuses on the study and application of a certain method of thought that is notably different from earlier types of philosophy.
First political work was on "On the Recent Domestic Affairs of Wurtemberg"
He condemns the absolutist rule of Duke Ferdinand along with the narrow traditionalism and legal positivism of his officials and welcomes the convening of the Estates Assembly, while disagreeing with the method of election in the Diet.
Descartes begins with the study of the nature of reality
To believe that reality is fundamentally water or the Indeterminate or whatever seems pointless, he claims, unless we know first whether our belief itself is justified