If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.

理解变化的唯一方法是投入其中，与之共舞。

我们要做的是让电池更安全、更高效、更环保。

写作是重新找回过去的一种方式。