The beauty of the Black-Scholes formula is that it depends on only one unobservable parameter, the volatility of the stock.
布莱克-斯科尔斯公式的美妙之处在于它仅依赖于一个不可观测的参数，即股票的波动率。
The novel is the most complete expression of human freedom.
我不相信慈善。我相信团结。
只要是利益他人的事情，就要坚持做下去；只要是不利于别人的事情，就要马上停止不做。
Drones in the future will be as ubiquitous as smartphones are today.
When you find everything you looked forI hope your life leads you back to my front door.Oh but if it don't，stay beautiful.