法律规则不是自我执行的；它们需要人的代理才能生效。

没有情感，就不会有黑暗向光明、冷漠向活力的转变。

The elements of consciousness are to be discovered by careful analysis.

The universe is not only stranger than we imagine, it is stranger than we can imagine.

The oil and gas industry must evolve, or it will become obsolete.

在科学中，没有所谓的最终答案。