Most wealthy people are moderately intelligent.

Really intelligent people often are poor... Once you get rich, you get lazy because your money starts working for you and people around you constantly feed you with false confidence and optimism and this makes you even lazier.

The smartest people I know are all poor in terms of wealth but sometimes they have high incomes.

Intelligence is not a single thing because there are many different types and almost no one is good at all of them.

There is emotional intelligence, reasoning ability, critical thinking, communication ability, spatial reasoning skills, mathematical ability, subconscious reasoning, etc...