一个物品的旅程可以告诉我们比物品本身更多的东西。
The beauty of mathematics lies in its simplicity and depth.
Of all men's miseries the bitterest is this: to know so much and to have control over nothing.
I don't care what people say about me. I know who I am.
对冲低油价的最佳方法是降低盈亏平衡成本。