To teach how to live without certainty and yet without being paralyzed by hesitation is perhaps the chief thing that philosophy， in our age， can do for those who study it.

当你认为自己无所不知的那一刻，恰恰是你最需要学习的时候。

最好的歌曲是来自灵魂的那些。

刚强纯洁的高尚人品，要在烈火般艰苦的斗争中锤炼；惊天动地的丰功伟业，必须在薄冰般险恶的环境里前进。