我已经不再年轻，不再无所不知。

故事是我们理解自己生活的方式。

Sustainability is the cornerstone of modern business—without it, we build on sand.

The longer I live, the more I feel that the only way to live is to live with love.

数学直觉常常指导算法的发展，但确保其正确性和效率的是严格的证明。