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。
实现明天的唯一限制是我们今天的疑虑。
成功不在于你赚了多少钱，而在于你对人们生活的影响。
意义具有内在的治疗能力。意义影响到一切事物。
If you're not failing every now and then, you're not doing anything very innovative.
The best designs are those that solve problems without drawing attention to themselves.