This quote emphasizes that the most significant and natural boundaries of a state are its internal boundaries, which are defined by the shared language, culture, and values of the people who live within them. These internal boundaries are created by the spiritual nature of human beings and exist long before any political or artificial boundaries are established.
The quote suggests that people who share a language and culture are naturally connected and have an inherent sense of belonging to each other. When communities of different languages and cultures are forced to merge, it can lead to confusion and a disturbance of cultural progress.
The author argues that the external boundaries of a state result from the internal boundaries, and not the other way around. The physical boundaries of a state, such as mountains and rivers, only serve to protect and define the people who are already united by their shared language and culture.
Overall, the quote highlights the importance of recognizing and respecting the natural boundaries of a state, which are defined by the unique characteristics and values of its people.