trahison des clercs（n.）
a French phrase used in English; "the treason of the intellectuals" ('clerics'); "self-compromised integrity of intellectuals, betrayal or corruption by academics, moralists, journalists, etc., of their vocation," the title of a 1927 French work by Julien Benda, translated into English in 1928.
In short, intellectuals began to immerse themselves in the unsettlingly practical and material world of political passions: precisely those passions, Benda observed, "owing to which men rise up against other men, the chief of which are racial passions, class passions and national passions." ... "Our age is indeed the age of the intellectual organization of political hatreds" he wrote. "It will be one of its chief claims to notice in the moral history of humanity." [Roger Kimball, introduction to 2007 English edition]
该词起源时间：1928年