ㄧㄢˊㄓㄜˇˊㄗㄨㄟˋyánzhě‑wúzuìㄨㄣˊㄓㄜˇㄗㄨˊㄐㄧㄝˋwénzhě‑zújiè

言者无罪,闻者足戒
  1. 詩經》:風化主文無罪足以。」看法不會因而獲罪聽取見解可以警戒 言者無罪,聞者足戒」。

don't blame the speaker, take note of his warning (idiom)​; an exhortation to speak one's mind without fear of reprisals, and with the expectation of being taken seriously