“BoxesWe built walls of cardboardthinking they would keep us safe.And they did.Until the flamescame.”

“Before I built a wall I'd ask to know what I was walling in or walling out.”

“But for now, the future, like the past, means nothing. For now, there is only a homestead built of trash and scraps, at the edge of a broken city, just beyond a towering city dump; and our arrival-hungry, and half-frozen, to a place of food and water and walls that keep out the brutal winds. This, for us, is heaven.”

“Before I built a wall I'd ask to knowWhat I was walling in or walling out,And to whom I was like to give offense.”

“The brick walls are there for a reason. The brick walls are not there to keep us out. The brick walls are there to give us a chance to show how badly we want something. Because the brick walls are there to stop the people who don’t want it badly enough. They’re there to stop the other people.”

“Those walls and bars are there for a reason,' said Crake. ' Not to keep us out, but to keep them in. Mankind needs barriers in both cases”