If it's a question for literature, maybe the higher end of intelligence is not correlated with happiness because it is more lonely. Not that intelligence itself makes you unhappy.,(reply>), Definitely isn't much correlation between intelligence and happiness. Statistically a lot of very intelligent people have addiction issues and depression, and a lot are introverts as well, which leads to being more lonely I guess. I always thought very intelligent people were statistically less happy that an average person. If a person has a problem internally in their brain causing them to be unhappy, their is nothing that intelligence can do to help a problem like that in general. Having said all that, i'm sure their are some techniques that can help happiness using your intelligence.,(reply>), Interesting 👍