What is the difference between intelligence and knowledge?

According to Paul Schmehl, Intelligence is the ability to grasp complex information.  Knowledge is the memory of the complex information you have grasped.  Think of a GPS.  It has the ability to ingest copious amounts of mathematical information and transform it into location information.  That's intelligence.  It also has the ability to store that information so that you can recall it when needed.  That's knowledge.