Is an intellectual always intelligent?
Is an intelligent person necessarily an intellectual?
Anyway, many years ago I had a job in a sandblasting company, and I was very good at it. It was a small company, and the staff and leaders were a cool and eclectic mix. Later I got a job at another company, which had a different kind of staff: these were working class not only in name, but also in mind. And there I had a hard time getting along with the others, and I didn't know why.
Fortunately it was explained to me by one of the guys who was aggressively working class in mind, but much more well-read than is typical for workers. He explained to me that the airs I had that I was good was not Okay in a place like that, because it's "like kicking a man when he's down" (somehow that made sense at the time).
He also told me that when I once had called him an intellectual, that was a big insult to him, because his knowledge belonged to everybody, and to him, an intellectual was a self-appointed superior asshole who thought he was better than others, or words to that effect.
Update: it seems I have to spell this out, which surprises me... I don't agree with that definition of "intellectual". To me, an intellectual is simply a person who likes to read and likes to think. And this means by definition anybody who follows this blog, for instance, is an intellectual.
It also means that anybody in history who made an invention or had a thought which advanced technology and thus civilization, is an intellectual. Without intellectuals, we would still be in the middle ages. Or rather, the stone age. Or maybe that's even overdoing it, since even the invention of stone tools would have taken an intellectual for the time.