当且仅当所有投资者都持有均值-方差有效的投资组合时，市场组合才是有效的。
In times of crisis, the true test of leadership is not just navigating the storm but emerging stronger on the other side.
The simplest gesture can contain the most complex meaning.
我不相信鬼魂，但我总是看到它们。
真相总是一种侮辱或玩笑。
大脑是一种计算机。
A great company is built on great people.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
在量子世界中，观察者不仅仅是观察者，而且是所观察现象的参与者。
我们都愿意为某种事业变得野蛮。好人与坏人的区别在于对事业的选择。
The quality of your life is the quality of your relationships.
If you don't say what you think then you kill your unborn self.