Stultitiam simulare loco prudentia summa est.
pron = stool-TIH-tee-ahm LOH-koh proo-DEHN-tee-ah SOO-mah ehst.
To pretend stupidity at the right time, in the right place, is the highest kind of wisdom.
Comment: To feign such "stupidity" means that one has been able to discern, in a given situation, that pretending docility and acting like one needs "guidance" from another, dangerous, or truly foolish, individual will actually invite him/her to reveal things that otherwise would be concealed. In a variety of forms, this is Socrates simply asking questions.
That is a rare wisdom, a special discernment. Otherwise, the ego likes to speak, to be in charge, to defend itself as important. And when it does, the fool becomes an adversary like a mirror--reflecting back the show, but revealing little to an ego that simply revels in its own image.