国家一定要有直言进谏的臣子，上级必须有敢于提出反对意见的下级，议论国政的人不停止，各种不同政见的人相互辩论，才可以长久保存国家，使国家兴盛强大。也就是说言论自由是民众的基本权利，每个人都可以提出不同的政见，民众有平等参与政治的权利。

We innovate by starting with the customer and working backwards. That becomes the touchstone for how we invent.

现在是过去与未来之间一座脆弱的桥。

The idea that everyone should slavishly work so they do something inefficiently so they keep their job – that just doesn’t make any sense to me. That can’t be the right answer.

自适应控制是关于实时调整控制器参数以应对系统动态变化的方法。