《战国策·楚一·江乙说于安陵君》
安陵君说： 我实在不敢忘记先生给我的教导，只因没有遇到好机会啊！ 
安陵君曰： 不敢忘先生之言，未得间也。 
Lord Anling said, "I truly dare not forget the instructions you have given me, but it is just that I have not encountered an opportune moment!"