《资治通鉴·魏纪·魏纪六》
左右亲信的忠心和谋略，未必胜于大臣，至于逢迎诌媚、阿谀奉承，有的却极其擅长。
左右忠正远虑，未必贤于大臣，至于便辟取合，或能工之。
The loyalty and strategies of confidants, may not be better than those of officials, as for flattering and appeasing, some though were extremely experienced.