译文：选择妻子要看重品德而不要看重容貌，交朋友要看重在内心而不要看重钱财。赏析：不管是娶妻嫁人还是交朋友，我们都要注重对方的人品好坏。

The most credible empirical research often comes from studies that have a clear and transparent design, where the assumptions are laid out for everyone to see.

The most important thing in life is to be happy.

布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为几个可观察的变量。