Great moments in Misnagdism

Who said this:

"There is among them one who is small and impoverished and who is completely empty of any knowledge, who has attempted to study neither mysticism not Talmud; he acts deceitfully, raising his voice, skipping upon the mountains, with music and loud songs... Although he has not learned, he is called a Sage and "Rebbe." The more he engages in movements and gesticulations, the more he is praised in the mouths of women and children... the dim witted and simple-minded offer up some of his praises, saying:"What a Hassid, what a righteous man."