他山之石，可以攻玉
《漢英詞典》（1995年）“他山攻錯”：there are other hills whose stones are good for working jade -- other people's advice is of help;
《漢英大辭典》（1993年）“他山之石可以攻錯［玉］”：Stones from other hills may serve to polish the jade of this one -- advice from others may help one overcome one's shortcomings.; There are other hills whose stones are good for working jade.; Other people's good quality or suggestion whreby one can remedy one's own defects.