No where in game is it mentioned that Wisdom and Intelligence modify the max # of spells your character can learn. Maybe it's mentioned in the manual, but there's no reason it can't be mentioned in game for those of us who thought we remembered everything from EB1
I suggest displaying on the relevant magic page the current # of spells learned for that disciple and the max # of spells learnable. On the mouse over for this text, mention the rule about Int or Wis / 2 for the max number. Also this should be mentioned during character creation where all other effects of attributes are stated.