The past claws its way out.

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

解释：货卖完了才知道不足，是由于不懂得计量；事情结束了才知道有余，是由于不懂得调节。

Thought is the most difficult task, which is why so few engage in it.

The choice is simple: either we protect nature now, or we pay the price later.

"Love is the only thing that makes life bearable in the end."

We believe that sustainable development is the key to a better future.

最好的数据库系统是对用户不可见但功能强大的系统。

语言不仅仅是交流的工具，更是探索人类经验深度的媒介。