Yanamino师夷长技以制夷
shī yí cháng jì yǐ zhì yíshiyichangjiyizhiyi
- "learn from the foreigners in order to gain command of them", idea advocated by Wei Yuan 魏源[Wei4 Yuan2]
Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences