How can you be so sure of who is and isn't doing that?
I don't think anyone is implying that all people who suffer clinical depression or any other kind of mental illness must therefore be gifted and/or intelligent.
What is being said is that there are many great minds throughout the history of the world which belonged to people who suffered from serious bouts of depression or other mental disturbances.
I think it is also being suggested that those inclined to put deeper thought into things the "common" person does not consider are more likely to suffer from depression than the "average" individual. I believe studies on this have been done which indicate that to be true, but I would have to look into that more before I could state it definitively.
I don't think anyone in this conversation up to this point has claimed otherwise.
One could say you are proud your daughter because she makes alot of money and lives a good life. You could be disappointed because she is a prostitute.
You can't...objectively use these terms.
I understand what you are saying, but I don't think anyone in this thread has equated one's success into possessing intelligence (although I may have overlooked a post that has done so).