受过教育的人与未受过教育的人之间的差异，如同生者与死者之间的差异。

"The most dangerous prisons are those we build for ourselves."

我不相信后悔。

可持续发展不仅仅是一个流行词，更是我们对后代的责任。

The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.

解释：人有知识，犹如树木有枝叶，树木有了枝叶，能带给人阴凉，人有了知识，就可以为人民做更多的事。