自动控制的根本问题是在存在干扰的情况下维持期望状态。

Sustainability isn't a buzzword—it's the only way forward for global food security.

学校不仅仅是教授数学和阅读的地方。它们是身份形成的场所，也是知识政治展开的地方。

To me, you are still nothing more than a little boy who is just like a hundred thousand other little boys. And I have no need of you. And you, on your part, have no need of me. To you, I am nothing more than a fox like a hundred thousand other foxes.

我从不后悔生命中做过的任何事或任何选择，但我对那些没做过的事充满遗憾。