No president who performs his duties faithfully and conscientiously can have any leisure.

质量在第一刀落下前就已开始，它始于正确的心态。

When we are planning for posterity， we ought to remember that virtue is not hereditary.

青年的危机不是生物性的，而是社会和政治性的，它需要一种新的语言来理解他们斗争性质的变化。

We believe that we need to own and control the primary technologies behind the products we make.

即使是最强大的人也需要有人站在他身边。