温故知新

おんこちしん

developing new ideas based on study of the past; learning from the past

Also written 温古知新

Meaning

n
developing new ideas based on study of the past; learning from the past

Example sentences

温故知新というからねえ。歴史の勉強は大切だよ。

They say you should consult the past if you want to learn about the future. History has a lot to teach us.