Earlier quoted context omitted.
the ability to hold two opposing ideas in mind at the same time and still retain the ability to function This is the same guy who said "video games cannot be art, and I will not consider debate about it ". The second part in particular was what I found disturbing.
I can't find a source for your quote, but he seems to consider quite a bit of debate in this article: http://blogs.suntimes.com/ebert/2010/04/video_games_can_neve... He also clarifies that he thinks video games can in principle be art, but that no video game yet made could hold its own among the great works of art.
I don't mean to restart the debate here, I'm just pointing out that his arguments are insulated and prejudiced, and hence my main point: that by denying any debate on the topic (it's the first sentence in your link - relented only by sheer volume), he refuses to learn about the topic. Again, I think this is in stark contrast to the quote I was initially responding to. I think it is profoundly anti-intellectual to behave in this manner.
I don't care whether or not he likes games, or whether he thinks they're shit art or not. Each to their own. But for an influential person in a related field to make such a contentious, declarative statement, and then refuse to entertain debate... that's anti-intellectualism, in my opinion. Just like the layperson who doesn't get cubism and calls it inferior as a result.
He did change opinion over time and concede that they could be 'non-traditional art', which suggests that yes indeed, engaging in debate (even if it has to be forced upon you) can actually change your views; help you understand why people say what they say.
PS: the snarky person in me had to laugh at Ebert's characterisation of games as 'not art' because the audience's actions can change the outcome or plot. Clearly he never played Mass Effect :D