Only continuous learning can keep us invincible in fierce competition.

工作本身就是回报。

万物都具备在我的心中，反躬自问而诚实，快乐没有比这更大的了。

The only limit to our realization of tomorrow will be our doubts of today.

Sustainable quarrying isn't an option; it's our obligation to future generations.

我不能没有书。