The worst aspect of the wall is to turn so many people into its defenders and produce a mental attitude that sees a wall running through everything, imagines the world as being divided into an evil and inferior part, on the outside, and a good and superior part, on the inside. A keeper of the wall need not be in physical proximity to it; he can be far away and it is enough that he carry within himself its image and pledge allegiance to the logical principles that the wall dictates.
