Why do mars bar say he knows Maniac Magee wasn't scared?

In the novel "Maniac Magee" by Jerry Spinelli, Mars Bar Thompson claims that he knows Maniac Magee isn't scared because he recognizes Maniac's courage and resilience. Despite the challenges and fears that others might have, Maniac faces adversity head-on, often defying expectations. Mars Bar, initially a bully, comes to respect Maniac's fearlessness, realizing that true bravery isn't the absence of fear, but the ability to confront it. This understanding marks a turning point in their relationship and character development.