[PK]

Agreed with everyone saying that this is just campaign flavor. The only reason I snubbed academic mages in the intro to Sorcery was to drive home the contrast between standard wizards and sorcerers. There's really no reason to say that sorcery isn't academic.

The best way is to require sorcerers to train, limiting them to the spells that their teachers know; if they want more, they can find new teachers or discover rare books containing long-forgotten spells. Bring up Thaumatology skill a lot, asking for rolls to know "what spell may have caused this" and such. Treat upgrading known spells as research projects -- demand Thaumatology and Research rolls, made in an appropriate library. That sort of thing.