“A stone on the road. “I saw water become bone.” How on earth did that happen? It was a metaphor, of course—riddles always were—but what was water a metaphor for? Blood that clots? A stone was hard, and so was a sword … brigands? Something that could stop a journey? No. No, of course not. The water wasn’t the metaphor. The road was the metaphor. The whale-road, the ship-road. The sea. What was a stone on the sea? “An iceberg,”