宋·范仲淹《岳阳楼记》：“然则何时而乐耶？其必曰：‘先天下之忧而忧，后天下之乐而乐乎！’”

陶斯亮《一封终于发出的信》：“在被贬外逐时，还念念不忘‘先天下之忧而忧，后天下之乐而乐。’”

be the first to become concerned with the world's troubles and last to rejoice in its happiness