“But the artist began to have misgivings as the wall underwent its transformation. Bigger than any pavement project he had yet undertaken, it made him restless. Over the years, a precise cycle had entered the rhythm of his life, the cycle of arrival, creation, and obliteration. Like sleeping, waking and stretching, or eating, digesting and excreting, the cycle sang in harmony with the blood in his veins and the breath in his lungs. He learned to disdain the overlong sojourn and the procrastinated departure, for they were the progenitors of complacent routine, to be shunned at all costs. The journey -- chanced, unplanned, solitary -- was the thing to relish.Now, however, his old way of life was being threatened. The agreeable neighborhood and the solidity of the long, black wall were reawakening in him the usual sources of human sorrow: a yearning for permanence, for roots, for something he could call his own....”