"The dead are never truly gone, they live on in the stories we tell about them."

悲伤越深，艺术越伟大。

如今你修习先王之术，仰慕圣人之义，诵读诗书，遍览百家之言，不可胜数。甚至还将它们抄写于竹帛上。

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。

The best designs come from understanding the problem deeply and then finding the simplest solution.