Do you take the Literacy skill?

Well, a secondary hero needs to be prepared accordingly for this – you need to slightly increase their Wisdom... :) Everything requires certain efforts...

And to "pass on his wisdom to the people," do you really need to increase the Wisdom of all of them? When their priority is the economy. No, if you have a second combat hero, then it's definitely necessary to increase their Literacy and Wisdom, and even Wisdom for both of them, but in other cases, it's not necessary.