Ok so this concept isnt easy to understand but basically it
Faustus is a doctor, who being tired of the way life is being lived at his time, decides to make a pact with the demon. This demon fosters in him the passion for progress and its techniques. That is why he gets so attracted to certain sights, which makes him compare his experiences to what he sees and feels. Each symbols has its own hidden meaning that goes much beyond the object it represents. They end up at the Pope's chamber very differently from when they first started the psychological journey described in the book: the search for oneself, the questioning about what importance life has and all the things involved in living, including wealth and relationships.