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。
先爱自己,其他一切都会水到渠成。
海洋连接着我们所有人,它的健康是我们共同的责任。
The power elite are not solitary rulers. Advisors and consultants, spokesmen and opinion-makers, are often the captains of their higher thought and decision.
A ship in port is safe, but that is not what ships are built for.