The market portfolio is efficient if and only if all investors hold mean-variance efficient portfolios.
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。
Running is not about being better than someone else. It's about being better than you used to be.
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
卡塞尔文献展不是一个博物馆,而是一个相遇与对抗的地方。
爱,始于自我欺骗,终于欺骗他人,这就是所谓的浪漫。
你妈妈那么抑郁是因为我。