Kant's cosmopolitan right stems from an understanding of all human beings as equal members of a universal community.
Cosmopolitan right thus works in tandem with international political rights, and the shared, universal right of humanity.
Cosmopolitan law is concerned not with the interaction between states, but with the status of individuals in their dealings with states of which they are not citizens.
At the foundation of Kant's system is the doctrine of “transcendental idealism,” which emphasizes a distinction between what we can experience (the natural, observable world) and what we cannot (“supersensible” objects such as God and the soul).
Kant argued that we can only have knowledge of things we can experience.