不要以为春天已经离去无处可寻，绿荫下还有未开放的花朵

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

智能化不是替代人，而是让人从繁重劳动中解放出来。

Always cut away from yourself.

We must balance energy development with environmental protection to achieve sustainable growth.

Anybody can make history. Only a great man can write it.