… is from page 191 of the 2011 revised and enlarged edition of Thomas Sowell’s 2009 book Intellectuals and Society:
The preservation of the vision of the anointed has led many among the intelligentsia to vigorous and even desperate expedients, including the filtering out of facts, the redefinition of words and – for some intellectuals – challenging the very idea of truth itself. Many among the intelligentsia create their own reality – whether deliberately or not – by filtering out information contrary to their conception of how the world is or ought to be.