When we love, we always strive to become better than we are. When we strive to become better than we are, everything around us becomes better too.
I always try to stay humble and keep improving.
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。
怎样的人,他才敢如此指责自己的错误呢?