在量子力学中，轨迹的概念失去了意义。

The future competition is not about products, but about business models.

The gritty individual approaches achievement as a marathon; his or her advantage is stamina.

我相信在一切似乎都出错的时候要保持坚强。

我们必须自由，不是因为我们宣称自由，而是因为我们实践自由。