Arrogance leaves no room for growth, which is what ENTJ's want in the end. . .
Depends on what growth the ENTJ in particular would want, doesn't it?
I've tried the whole "understanding retards" part several times, but it's too frustrating. I like hanging out with intelligent people, that stimulates growth for me. It might not bring out the nurturing sides of my personality, but nobody is perfect.
Some of you will believe that my view of "intelligent" would be clouded by different prejudices etc... While that is the case with one or two of the MBTI types, I don't really disfavor someone because of political opinion. My friends are a weird mix of sentients...
Best friend: Male ENFJ, 21 (same age as me), non-political, pretty rational for an NF. Most of the time. Regardless, he's intelligent and has the best social skills available.
Good friend: Male ISTJ, 22, libertarian (used to be a big racist, but age and intelligence eventually caught up with that), cynic, takes skepticism to a new level. Very, very poor social skills (pretty funny to watch). Will most likely become a serial killer sometime during his lifetime. I don't talk much about IQ, most of the time. But this guy is probably pushing 200. He's a complete freak.
Good friend: Male INTJ, 24, liberal, total geek. We became good friends a few years ago when he introduced me to roleplaying games. He's the best storyteller i've encountered. He often comes with very good advice of all kinds... But that's probably natural from an INTJ.
Good friend: Male INTP, 21, non-political,
geeky INTJ's brother. The very image of a holy paladin... The guy haven't even commited sin inside his own head. Insane. He doesn't appear bright, but he spits out truth every now and then. I think that he does a lot of thinking that nobody gets to share... Kind of like "Silent Bob".
He talks a lot though, because he's socially awkward. Both brothers NT does this little thing, but they are clearly introverts.
Probably the most honest guy in Scandinavia. Sorry, girls he's taken though. His girlfriend would kill anyone who tried
Good friend: Female ENFP, couldn't spell the word politic for a thousand bucks, insanely goodlooking, very manipulative but does it more like a game, she isn't really mean at all. When I first met her, I fell in love, but learning more about her I thought
"good lord! gotta stay away from that venomous spider!" too many times, so we ended up as friends. I think that she liked having someone around that wasn't enthralled by her looks, so we became good friends. She moved to a town about 80 kilometers away recently, though. Nowdays I don't meet her more than once every three months or something. Imagine her as a slightly less intelligent, blonde, illiterate CaptainChick with fangs.
Pretty varied selection... All they have in common is that they're fairly smart in some ways. Had an ISFP friend once, too, but she was mostly demanding and annoying in general, so I stopped talking to her completely. I actually hid behind a shelf at the grocery store a few days ago because I didn't want to say hello to her

I find all of them to be stimulating to be around. Knowledge and (to some degree) intelligence does rub off, I believe.