WALLS! WALLS! WALLS! There are physical walls – made of brick, timber, or metal – that partition or enclose. There are psychological walls – comprised of fears, prejudices, values and beliefs – that fuel political, religious, and racial divisions. And lastly, there are the greatest of all walls . . . distance and time. All walls, regardless of the type, perform the same function. Essentially, walls affect our ability to deal with others, and our world, in the same manner as if the walls did not exist. Barriers.