The Way Back

Self-consciously he ambled along the spotless streets behind Persum—streets which seemed to be paved with pure gold. He tried not to notice the open stares given him by the city's inhabitants. He realized that they did not mean to be impolite. It was simply that a man of his bulk was unique in this civilization.

More and more as they proceeded he began to take cognizance of the complete absence of transportation of any sort. Everyone here walked. Of course, the slighter gravitational pull made walking considerably less strenuous, but still, that didn't account for the various groups of golden men he had passed, laboriously pulling great blocks of stone by man-power alone—when a small wheeled vehicle, or even one beast of burden would have lightened the load immeasurably.