The division of labor in manufacturing is the great principle by which we gain advantage over other nations.
物种和系统的多样性不是复杂，而是保险。
I think of my pile of old paperbacks, their pages gone wobbly, like they’d once belonged to the sea.
我想起我那堆旧平装书，书页已经变得松软，仿佛它们曾经属于大海。