The historian must be a poet and a philosopher.

最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定失败的策略就是不冒险。

要理解世界，你必须首先寻求理解自己。

The secret of change is to focus all your energy not on fighting the old, but on building the new.

想象力只是模仿，批判精神才能创造。

Zero Defects is a performance standard. It is the standard of the craftsman, regardless of his or her trade.