The frame of such a city is, I shall argue, marked out by its walls, within which dread disorders can arise. By the late fifth century, the city walls, intended to provide protection for the citizenry, come to be regarded as structures that can also preserve, encourage and even breed destruction.

The frame of such a city is,
I shall argue, marked out by its walls, within which dread disorders can
arise. By the late fifth century, the city walls, intended to provide protection
for the citizenry, come to be regarded as structures that can also preserve,
encourage and even breed destruction.