水至清則無(wú)魚（水至清則無(wú)魚）　

◎ 水至清則無(wú)魚 shuǐ zhì qīng zé wú yú

[when the water is very clear,there will be no fish—one should not demand absolute purity] 源自《大戴禮記》:“水至清則無(wú)魚,人至察則無(wú)徒。”意謂水太清了,魚便不能活?，F(xiàn)用來(lái)告誡人們對(duì)人對(duì)物不可有過(guò)高的要求