There's a *very* fair chance you'll be able to cast higher level spells - just not from memory.
Typically, in cRPGs you are either outnumbered or outclassed. So, you'll likely end up fighting higher level mages than your own. They can very well be in the possession of spell scrolls that are too high for you to scribe. You can still *read* the scroll though; as a one-time-use item.
There's probably a scroll of TimeStop somewhere, or Wish.
