不以規矩,不能成方圓 [ㄅㄨˋ ㄧˇ ㄍㄨㄟ ˙ㄐㄩ , ㄅㄨˋ ㄋㄥˊ ㄔㄥˊ ㄈㄤ ㄩㄢˊ; bu4 yi3 gui1 ju5 , bu4 neng2 cheng2 fang1 yuan2] without rules, nothing can be done (idiom, from Mencius); one must follow some rules ◄ ►