This idea—that the difference between law and politics is a difference in language—lies at the heart of Niklas Luhmann’s systems theory. Luhmann suggested that society must be understood as a communication system. As such, it is differentiated into different subsystems, among them the political system and the legal system, but also, for example, the religious system, the scientific system, and so on.
In the Stanford Encyclopedia of Philosophy, Jean-Paul Sartre’s ontology is described as follows: Its descriptive method moves from the most abstract to the highly concrete.
Society emerges out of communication (as a solution to double contingency); however, society is the communication, not the people who communicate (society doesn’t become smaller