I think, from what I remember, the magic of true-names and riddling in Le Guin's Earthsea books is self-supporting and "believable".
Are there any other comic book equivalents?
The naming of things as a sort of cornerstone for magic was alluded to in Neil Gaiman's The Books of Magic (which J.K. Rowling subsequently ripped off for Harry Potter, I don't care what anyone says) and it is a recurring feature in Hellblazer, which often adopts a rather sober and pragmatic view of magic. (I haven't actually read the Le Guin books, but it seems to me that it's the same idea.)
Haven't read the books, but I hate it in the Harry Potter films when, simply by having wizard blood, waving a wand, and saying magic words, the Hogworts kids "do" magic --only some are inexplicably better than others while others repeatedly fail or do the wrong kind of magic. Maybe, as in Peter Pan, they don't believe enough in fairies?
Thanks, Telle, for providing me with an opportunity to vent my hatred of the Harry Potter phenomenon, which continues to baffle me. Why this is so popular is beyond me - I've read a few of the books, and they are sloppily written, poorly thought-out, and the magic just doesn't make any sense: it is always tailored to the situation, so to speak, and you can tell Rowling is struggling when she comes up with one magic spell, only to realise that it clashes with something else. Hence "apparating", which is Rowlingspeak for teleportation, doesn't always work because it doesn't fit with her cool ideas like flying cars and buses. Similarly, Harry and his friends seem capable of all sorts of amazing things - becoming invisible, travelling through time, flying, you name it - but when they are confronted with the bad guy, all they can do is send some rays out of their wands and hope that Hagrid will turn up to punch him in the bonce.
I could go on, but I won't. Instead, here's a link to one of the chapters of Brad Neely's redubbing of the first film,
Wizard People, Dear Reader, which is ace. I just love the line "Harry awakes to yet another Tequila sunrise".
http://www.youtube.com/watch?v=oIbGmhkjra0