You cannot always control what goes on outside. But you can always control what goes on inside.

沉默并不总是智慧的标志，但喋喋不休总是愚蠢的标志。

The hardest decisions often require balancing short-term gains with long-term consequences.

知识的最大敌人不是无知，而是知识的幻觉。

If the job has been correctly done when a common stock is purchased, the time to sell it is—almost never.