One of the impressive things about paranoid literature is the contrast between its fantasied conclusions and the almost touching concern with factuality it invariably shows. It produces heroic strivings for evidence to prove that the unbelievable is the only thing that can be believed.....Respectable paranoid literature not only starts from certain moral commitments that can indeed be justified but also carefully and all but obsessively accumulates "evidence." The difference between this "evidence" and that commonly employed by others is that it seems less a means of entering into normal political controversy than a means of warding off the profane intrusion of the secular political world. The paranoid seems to have little expectation of actually convincing a hostile world, but he can accumulate evidence in order to protect his cherished convictions from it.... - Richard Hofstadter

via Boing-Boing.