Enough Stupidity in Every Wise Man (Russian: На всякого мудреца довольно простоты; translit. Na vsyakogo mudretsa dovolno prostoty) is a five-act comedy by Aleksandr Ostrovsky. The play offers a satirical treatment of bigotry and charts the rise of a double-dealer who manipulates other people’s vanities. It is Ostrovsky’s best-known comedy in the West.