From Fan Zhongyan's (
范仲淹)
岳阳楼记 (Account of Yueyang Tower, Song dynasty):
先天下之忧而忧,
后天下之乐而乐 - 'To feel the world's sorrows before the world, and the world's joys after it.' The defining statement of the Confucian scholar-official's duty; one of the most famous lines in all Chinese prose.