Why does Paul dispise all the authority figures that surround him? Thx!!

Paul despises the authority figures around him because he feels they have no appreciation for him.

In the itch to let his instructors know how heartily he despised them and their homilies, and how thoroughly he was appreciated elsewhere, he mentioned once or twice that he had no time to fool with theorems; adding, with a twitch of the eyebrows and a touch of that nervous bravado which so perplexed them, that he was helping the people down at the stock company; they were old friends of his.