听其言观其行
听

听其言观其行　　　 tīng qí yán guān qí xíng

[listen to what a person says and watch what he does;take note of sb.'s words but judge him by his deeds] 听一个人说什么，又看他做什么，常有不仅要听他说的，更重要的是看其做的如何的含义