Quote Originally Posted by Fyraltari View Post
As I understand it, the wizard's magic isn't inside the spellbook, per se, the spellbook is just where they write down their spells. They do all the actual magicking when they prepare their spells in the morning and casting a specific spell is just triggering the spell they loaded. So they don't take the magic from anybody or anything but themselves.

Meanwhile the Clerics' spells are prepared by the gods and handed to them.
The wizard still remains dependent on an external source for their ability to cast spells.