[It's easy to change rivers and mountains but hard to change a person's nature;a fox may grow grey,but never good;a sow,when washed,returns to the muck;it is hard to change man's natural disposition than to change rivers and mountains] 政體容易更改,本性難于變移,比喻生性風(fēng)格或既成的事實(shí)難以改變

同“ 江山易改，本性難移 ”。 明 《殺狗記·諫兄觸怒》：“他縱無(wú)怨恨之心，奈絶無(wú)順從之美，正所謂江山易改，稟性難移?！?b>《醒世恒言·徐老仆義憤成家》：“常言道得好：‘江山易改，稟性難移。’”