The best things in life are unexpected.

即使在困难时刻，我也总是努力保持积极。

Every brick and every tile has its own language; architects must learn to listen.

The beauty of the world lies in the diversity of its people and cultures.

We are on the verge: Today our program proved Fermat's next-to-last theorem.

The concept of truth is inseparable from the concept of freedom.

预测未来的最好方式就是创造未来。