Nomadic Space and ‘Erratic’ Space
WALKSCAPES: Walking as an aesthetic practice (Culicidae Architectural Press, 2002)
Francesco Careri

…Streets are the space left over between buildings. A house alone is an island surrounded by a sea of open space, and the villages that preceded cities were no more than archipelagos in that same sea. But as more and more buildings arose, they became a continent, the remaining open space no longer like the sea but like rivers, canals, and streams running between the land masses. People no longer moved anyhow in the open sea of rural space but traveled up and down the streets, and just as narrowing a waterway increases flow and speed, so turning open space into the spillways of streets directs and intensifies the flood of walkers.

Excerpt From: CHAPTER 11: THE SOLITARY STROLLER AND THE CITY.
Wanderlust: A History of Walking. - iBooks.
Rebecca Solnit.