We live in the best of all possible worlds because it was chosen from all possible worlds.

Your passion in life should fit you exactly； but your purpose in life should exceed you. Work for something much larger than yourself.

实现明天的唯一限制是我们今天的疑虑。

最好的公司不只是销售产品，他们还销售信任和可靠性。

Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.

天下人都说这是他们努力的结果,不会说”这是我见到了命”。

物理学的美丽不仅在于它提供的答案，还在于它揭示的奥秘。