Quentin is an oddball at school, considered "the class joke," who speaks in a pseudo-English accent, carries an old leather briefcase and uses big words. Quentin is a loner who avoids physical activity and is considered to be some kind of genius. He becomes a rocket boy after Sonny asks him for advice about building rockets. Quentin and Sonny do the first crude rocket sketches and theorize how to build them. Quentin has a scientific and bookish orientation to their experience. Quentin is so scientific that he can't turn off his brain, even when thinking about girls. When Roy Lee teaches the boys how to unsnap a bra in one move, Quentin is thinking that bras should be redesigned, that there should be a "better system." At a key point in Sonny's life, Quentin insists that Sonny do the equations for the design of a De Laval nozzle. Sonny is frightened by doing them, as he learned calculus on his own, not taking the class with Quentin and the other rocket boys. Quentin pushes Sonny to do the equations to design the final rocket and nozzles, or all of their efforts to design a great rocket, a rocket that will do what it is supposed to do, will be lost. Quentin goes to college and becomes an engineer.