" Marcuse's own highhanded scorn about those whom he criticizes makes it not inapposite to remark that the arguments which I have been deploying are very elementary ones, familiar to every student with the barest knowledge of logic. The suspicion is thus engendered that not only Marcuse but also Adorno and Horkheimer actually do not know any logic, and it is certainly the case that, if they do know any, all three have taken some pains to conceal their knowledge of the subject which they are professedly criticizing. "

― Alasdair MacIntyre , Herbert Marcuse