飲ㄧㄣˇyǐn水ㄕㄨㄟˇshuǐ思ㄙsī源ㄩㄢˊyuán

  1. 比喻不忘本。參見「飲流懷源」條。《兒女英雄傳·第二五回》：「奉著這等二位恩情備至的翁姑，伴著這等一個才貌雙全的夫婿；飲水思源，打算自己當日受了八兩，此時定要還她半觔。」《官場現形記·第二八回》：「小姪這個官兒，還是軍門所保，小姪飲水思源，豈有坐視之理？」反數典忘宗、恩將仇報、忘恩負義

英lit. when you drink water, think of its source (idiom)​; gratitude for blessings and their well-spring, Don't forget where your happiness come from., Be grateful for all your blessings!
德Gedenke der Quellen, wenn Du trinkst (Sprichw)​