WE SOMETIMES look up at the sky and wonder what kind of a world exists above the layers of blue. As we go beyond the coat of clouds, a whole new world of radiance and infinity spreads before us. Flying above the faint landscape gives us a peculiar sense of freedom, which comes from knowing we are far away from earthly matters that confine us. Innumerable limits that press us down seem to fade away as we soar, higher than the sky.