檢視前事不忘，后事之师的原始碼

[[File:Qsbwhs.jpg|缩略图|400px|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=前事不忘%2C后事之师&step_word=&hs=0&pn=12&spn=0&di=24420&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1783819983%2C3009163378&os=1243553244%2C2086109163&simid=4078723303%2C438685718&adpicid=0&lpn=0&ln=876&fr=&fmq=1584708800383_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fa4.att.hudong.com%2F86%2F14%2F01300001128119143253142616717_s.gif&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bkwthj_z%26e3Bv54AzdH3Ftrw1othtAzdH3F%25Ec%25bl%25bD%25E9%25BA%25bB%25E9%25Bb%25bD%25Ec%25BF%25lb%25EF%25BC%25bC%25Ec%25la%25bE%25E9%25BA%25bB%25E9%25Bl%25bB%25Ec%25Bb%25bb&gsm=8&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 原圖鏈接][http://www.baike.com/gwiki/前事不忘，后事之师 图片来源]]]

'''前事不忘，后事之师''' :成语，出自《战国策·赵策一》：“前事之不忘，后事之师。”

后人将“前事之不忘，后事之师”改为“前事不忘，后事之师”作成语，意在提醒人们记住过去的教训，以作后来的借鉴。