It takes considerable knowledge just to realize the extent of your own ignorance.
一个人需要相当的知识才能意识到自己的无知程度。
Memory is like the sea, throwing onto the shore what it wants to hide in the depths.
持续改进不是可选项,而是必须项。
我们不仅仅是开采煤炭,我们在为国家提供动力。