天下的一切事物不可以没有标准，做人要有做人的标准，即原则;做事要有做事的标准，即规则;治国要有治国的标准，即法则。不遵循一定的标准而能成事者，自古以来是没有的。

记忆是我们不断向自己讲述我们的故事的方式——并向别人讲述一个略有不同的版本。

The progress of mathematics is measured by the number of problems it can solve.

For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.

"Life is a shipwreck, but we must not forget to sing in the lifeboats."

In times of uncertainty, innovation becomes our most reliable tool.