员工培训不是成本，而是质量和卓越运营的基础。

The true power of mathematics is not in its complexity, but in its simplicity and elegance.

有时候当狗还真难。

The power elite are not solitary rulers. Advisors and consultants, spokesmen and opinion-makers, are often the captains of their higher thought and decision.

The world is changed by your example, not by your opinion.

科学中的每一个发现都会引发一系列新的问题，这正是它如此令人兴奋的原因。