[daemon_9009]

Intelligent people see and understand the world deeper, more than an average person can, They see the world in all its forms, good and bad, understanding too much does not bring happiness but gloom. existence seems to be absurd, the more we understand existence the more one believes that it shouldn't have existed at the first place.

"happiness in intelligent people is the rarest thing I know" is a quote by Hemingway.

Also intelligent people overthink about a particular situation, while its better for survival but it can reduce happniess.