Learning is the process of modifying symbolic structures to improve performance.

我们民主的最大祝福是自由。但归根结底，我们唯一的自由是自律的自由。

"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."

守时是尊重的表现。

文学是耐心与惊叹的艺术。