The beauty of a woman is not in a facial mode but the true beauty in a woman is reflected in her soul. It is the caring that she lovingly gives the passion that she shows. The beauty of a woman grows with the passing years.

PAC学习框架提供了一种形式化的方法来量化概念类的可学习性。

人类不仅天生渴望被爱，还渴望变得可爱。

竞争优势的真正来源是想象未来并创造未来的能力。