And in that mixture the simplest truth endured: value lives where matter meets meaning. …           He learned the lesson in the town where the sea kept its own small economy.                                On clear mornings the fishermen dragged lines through glassy water and sold silver fish; on windy afternoons teenagers walked the headland and gathered smooth stones—pebbles—that tourists bought for a lark. One spring, an old jeweler named Mara arrived with a battered field guide and a loupe. She set up a table in the square, placed a handful of pebbles beside a single, small diamond, and waited for the market to tell its story.  “A diamond is expensive because it is scarce compared to pebbles,” she said when a curious crowd formed. “If there were fewer pebbles and more diamonds, the pebbles would be worth more.” It sounded obvious. But Mara wanted them to see how obvious things hide behind institutions, technologies, and stories.  She explained first how nature’s scarci...