海鲜的真正成本不仅仅是价格标签，而是物种的长期可持续性。
The true cost of seafood isn't just the price tag—it's the long-term sustainability of the species.
The most important thing is to be able to think like an economist, to see the world through that lens.
——《在广州商团及警察联欢会的演说》（1924年1月14日）