Maybe the sky is an intricate tattoo of a small bird in flight, maybe the universe is a forest, the soft moon a yellow tiger among the many green moons. Maybe the sky is a blue bicycle with wheels of ether, long spangled streamers slipping by. If the sky is a river maybe the river is a ribbon of sky winding through a sea of grass. Maybe the sky is made of glass and we walk gingerly beneath it on the tender pads of our bare feet.