光的理论实际上是物理学两大理论的交汇点，即粒子理论和波动理论。

树叶的低语比董事会的辩论更有智慧。

我从来不太愿意以道德家的口吻来说话。

The key to successful investing is to have a strong understanding of the fundamentals, a disciplined approach, a clear understanding of the market, and a long-term perspective.

医生知道的如此之少，收费却如此之高。