hit the nail on the head 一针见血
have an iron hand in a velvet glove ．
说得好听点,这是外柔内刚；说得难听点,那就是口蜜腹剑
great minds think alike 英雄所见略同.
good wine needs no bush 酒香不怕巷子深
Give him enough rope and he will hang himself.授绳与愚,愚能自傅.
Evil does not always come to injure.罪恶不都会带来伤害.
A fool may give a wise man counsel.愚者千虑,必有一得.