"Every person takes the limits of their own field of vision for the limits of the world"

Arthur Schopenhauer is suggesting that people are limited not just by physical limits however also by their own understanding and experience. Each person's understanding of the world is influenced by their own specific experiences, beliefs, and point of view. Therefore, individuals frequently presume that their own limited point of view is the only fact and fail to acknowledge that there are other possible ways of seeing the world. Simply put, we typically mistake our individual experience for an axiom. By acknowledging and understanding the limitations of one's own perspective, one can expand their view of the world and get a deeper understanding of the interconnectedness of all things.