有则改之，无则加勉。——朱熹．《集注》
Correct mistakes if you have committed them and guard against them if you have not.
（Selected Works of Mao Tsetung, Vol.3）
胜人者有力，自胜者强。——《老子．第三十三章》
He who conquers others can be called physically strong, / He who conquers himself is mighty.
（任继愈 译）
人生一世，草木一秋。——冯梦龙：《醒世恒言．卖油郎独占花魁》
Man lives to his death as grass lives from spring to autumn.
（《汉语熟语英译词典》）
善不可失，恶不可长。——《左传．隐公六年》
Do not lose the chance of doing good, nor encourage the evil.
Good things should not be abandoned; evil things should not be allowed to develop.
（《中国古代名言词典》）
由俭入奢易，由奢入俭难。——司马光：《训俭示康》
It is easy to turn thrift into extravagance; it is difficult to turn extravagance into thrift.
（尹邦彦 译）