psychology is not science,(reply>), Yeah intelligence definitely does not always have the ability to make a person happy at all. So many depressed extremely intelligent people who have drug and/or alcohol addiction in general, and over the course of history. Very very intelligent people I think are less happy overall than people of average intelligence. Issues and injuries inside the brain making someone unhappy are not thing's you can solve with intelligence. Some intelligent people are happy obviously, their's just very little correlation.