千人之诺诺，不如一士之谔谔 qiānrénzhīnuònuòbùrúyīshìzhī'è'è better to have one honest critic than a thousand yes-men
one person's honest and forthright criticism is more valuable than the mindless compliance of a thousand people; literally, the 'yes yes' of a thousand people is not as good as the 'honest speech' of one scholar