I mean Leonardo himself knew he was horrible in both Latin and math. He had access to various books in both subjects during his lifetime (thanks in part to the

I mean Leonardo himself knew he was horrible in both Latin and math. He had access to various books in both subjects during his lifetime (thanks in part to the printing press) but his lack of foundational knowledge made it hard for him to learn geometry when he lacked skills in arithmetic and algebra. Secondly, it's a bit funny that you say the book could have shown him how to square a circle, seeing as it's an impossible problem. https://en.wikipedia.org/wiki/Squaring_the_circle https://en.wikipedia.org/wiki/Squaring_the_circle