Just marry a smart women. Multiple news reports cropped up back in 2016 claiming that our intelligence comes mainly from our mothers.
In simple terms, the argument that intelligence comes from moms boils down to chromosomes. Males have one X and one Y chromosome, while females have two X chromosomes. It's argued that X chromosomes contain important IQ genes, and since boys can only receive an X chromosome from their mother, that must mean they also receive their intelligence from the maternal side.
OBTW, my mother was valedictorian of her high school class.




