True leadership is about making tough decisions today that will benefit future generations.

计算复杂性的研究不仅仅是关于问题的分类；它是关于理解计算本身的本质。

Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning.

技术应该为农业服务，而不是相反 - 我们绝不能忘记我们的根基。