只可意會,不可言傳 [ㄓˇ ㄎㄜˇ ㄧˋ ㄏㄨㄟˋ , ㄅㄨˋ ㄎㄜˇ ㄧㄢˊ ㄔㄨㄢˊ; zhi3 ke3 yi4 hui4 , bu4 ke3 yan2 chuan2] can be understood, but not described (idiom, from Zhuangzi 莊子); mysterious and subtle ◄ ►