伟大的传记应该像一幅肖像，既能捕捉光明也能捕捉阴影。

Every challenge in business is an opportunity to rewrite the rules.

The stream of thought is a stream of life-sustaining acts.

We wish to discuss a structure for salt of deoxyribose nucleic acid. This structure has novel features which are of considerable biological interest.

在统计工作中，正确的数学工具必须用于正确的问题，而且工具必须锋利。