[Then again, he doesn't sound upset by this either. He likes succeeding at various things like swimming, but it doesn't feel like it's building up to a career for him.]
I'm not good at school things the way you are and swimming won't keep us safe here.
[So nothing about his personality.]
But maybe there's a kind of magic I can learn that's not as hard as math formulas.
Action;
[Then again, he doesn't sound upset by this either. He likes succeeding at various things like swimming, but it doesn't feel like it's building up to a career for him.]
I'm not good at school things the way you are and swimming won't keep us safe here.
[So nothing about his personality.]
But maybe there's a kind of magic I can learn that's not as hard as math formulas.