你最不满意的客户是你最好的学习来源。

The soul is created in a place between time and eternity: with its highest powers it touches eternity, with its lower time.

The most powerful art is often the most ambiguous.

欧佩克不再掌控全球石油市场的所有牌。

The night is a great dream, but the stars are its reality.

拿古代的情况作标准来看今天的事情，这是对今天不正确的看法；拿今天的情况要求古人，这是不正确的历史观。此言时代不同，社会情况就会不同，因此考察古今，论定古今人物或事件，都不能持相同的标准，而必须结合不同情势具体对待。