Quality is not a department; it is a responsibility of everyone in the organization.

我们都是自以为是的伪君子。

The most important thing in mathematics is to ask the right questions.

一个奇怪的事实是，根据从生物学或地球物理学的角度出发，对地球史前条件会得出完全相反的结论，这反映了我们目前知识的不完整状态。