One foul sentence does more hurt than many foul examples. For these do but corrupt the stream；the other corrupt the fountain.

这是数着别人契上的齿数，而以为自己很富有。 

We die containing a richness of lovers and tribes, tastes we have swallowed, bodies we have plunged into and swum up as if rivers of wisdom, characters we have climbed into as if trees, fears we have hidden in as if caves.

数学是给不同事物起相同名字的艺术。

天然气的未来在于技术和效率。