In chapter 8: What does Charles Wallace say that a father is?

As they walk down a long corridor, Meg tells Calvin that he should try to use the powers of persuasion that the three ladies had given him before they left. He agrees to try, and attempts to talk with Charles Wallace. He almost succeeds in breaking the “spell,” but Charles Wallace narrowly avoids his methods of persuasion. He tells them that they need to continue on to see “Murry,” and when Calvin asks if that’s what he calls his father, Charles Wallace answers that “Father? What is a father?...Merely another misconception.”