In Great Expectations, why is Pip impressed with Mr. Jaggers in chapter 20?
A person's best reference or testimony is often what others say about them, not what the individual himself boasts. This is the case with Mr. Jaggers. Reputation impresses Pip. The chapter places Pip in Jaggers' office alone which has it's own derogatory atmosphere, but when Pip hears others speak of Jaggers as they too wait for Jaggers, Pip grows interest and respect. He narrates to us:
These testimonies to the popularity of my guardian made a deep impression on me, and I admired and wondered more than ever.
These folks had been speaking of how efficiently Jaggers works. People only want him for their court defenses. As the chapter continues, Pip watches Jaggers handle several conversations and actions at once and Pip continues his admiration. Jaggers, in fact, treats these people terribly, but they comply with his advice or commands. What Mr. Jaggers wants done, he gets done.