Theorems are the milestones of mathematics.

The most sustainable solutions often come from the simplest ideas.

The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.

If you tremble with indignation at every injustice, then you are a comrade of mine.

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。

我们有责任确保我们的运营为子孙后代留下积极的遗产。