Which excerpt from The Number Devil best shows the entertaining side of the number devil's character?
"If I'd known you were going to be such a scaredy-cat, I wouldn't have entered your dream."
O "With one-l am speaking of the numeral, of course--you can do almost anything."
"I can't seem to come up with anything. You were right. It doesn't work. How did you know?"
O "Guessing? Guessing is not allowed in mathematics! Mathematics is an exact science!"