In Latin, the word limes meant a property boundary, often marked by a stone/sign. In the second century A.D., the far-flung limits of the Roman Empire stretched from Scotland to Arabia. In English, we have many expressions – “age limits,” “speed limits.” “limitless opportunities,” “a limited time only,” and “city limits.” The title of a Schall book is: At the Limits of Political Philosophy.
The point of a limit is that a thing is what it is, not something else. It cannot be anything else or everything else but only what it is limited to be – this thing, not that