Which excerpt from the number devil best conveys that the author's purpose for writing is to entertain? well, in the middle of the night, still woozy with sleep, he staggered down to the basement in his pajamas, and what did he find next to the wine cabinet? "most genuine mathematicians are bad at sums. besides, they have no time to waste on them. that's what pocket calculators are for." "just as there are infinitely large numbers, there are infinitely small numbers. and an infinite number of infinitely small numbers." "wrong! " the number devil shouted, his mustache quivering, his eyes bulging, and his face turning red with rage.