在物理学的世界里，我们经常发现最简单的问题最难回答。

Consumer trust is hard to earn but can be lost in an instant, we must always remember this.

Life is what happens when you’re busy making other plans.

Children totally accept — and crave — family rules. “In our family we have a rule for X” is the only excuse a parent needs for setting a family policy. In fact， “I have a rule for X” is the only excuse you need for your own personal policies.