Know how to make use of stupidity: The wisest man plays this card at times.
There are occasions when the highest wisdom consists in appearing not to know - you must not be ignorant but capable of playing it.
It is not much good being wise among fools and sane lunatics. He who poses as a fool is not a fool.
The best way to be well received by all is to clothe yourself in the skin of the dumbest of brutes.
Baltasar Gracian, 1601 -1658