And I urge you to please notice when you are happy, and exclaim or murmur or think at some point, 'If this isn't nice, I don't know what is.'

教育的真正目标是唤醒灵魂。

每一个明天都有两个把手。我们可以用焦虑的把手抓住它，也可以用信念的把手抓住它。

现代采石必须将地质学的智慧与工程的创新相结合。