Decartes was actually French.

And Kant's major contribution was a theory of mind in which time and space where the mental intuitions by which the mind sorts all empirical data. But these intuitions were a given, arising not from the mind but from the "noumenal" realm (as opposed to phenomenal, which is the physical reality). This noumenal/phenomenal distinction, the boundary between the seen and unseen worlds allows for the compatabilism between freedom and determinism for Kant, who proposed that it is only through following the moral law that we become free.

It's a compatabilist ontology, more of a dual-aspect theory than the Cartesian substance dualism which Buddha definately was NOT a proponent of...