The New York Times has published a number of letters about the scandalous review of Dennett by Wieseltier, on which we commented previously. Tim Maudlin (Philosophy, Rutgers) has a pithy version of a point I had also called attention to about the relevance of the causal origin of a belief; he writes:
Leon Wieseltier writes: "You cannot disprove a belief unless you disprove its content. If you believe that you can disprove it any other way, by describing its origins or by describing its consequences, then you do not believe in reason." Someone tells me that he believes that the core of Mars is iron. When I ask how he came by that belief, he tells me that it came to him in a dream. This does not disprove his belief, but does show that there is no reason at all to take it seriously.
This, of course, is a familiar epistemological point, though it is amazing how many folks, including some (not very good) philosophers, fail to appreciate it.