We have separate words for intelligence and wisdom for a reason.

Intelligence is not particularly correlated to ethics or morality. Probably sounds obvious when I say it directly, but it is clearly something that you have banging around in the back of your mind. Bring it forward out of the morass of unexamined beliefs so you can see that it is clearly wrong, and update the rest of your beliefs that are implicitly based on the idea that intelligence somehow leads to some particular morality as appropriate.