“Calculus was not math. It was a fucking science experiment gone wrong.”

“What the hell did magic wands have to do with helping girls learn math and science? He'd been good at both. He could have helped them with math and science. Weren't these girls supposed to be building skills? Screw magic wands. He'd have handed out some fucking calculators.”

“Too much math and science isn't nourishing to the soul.”

“I abandoned the assigned problems in standard calculus textbooks and followed my curiosity. Wherever I happened to be--a Vegas casino, Disneyland, surfing in Hawaii, or sweating on the elliptical in Boesel's Green Microgym--I asked myself, "Where is the calculus in this experience?”

“I could have gone to medical school, I said. Except for all the math and stuff.”

“Yet in another way, calculus is fundamentally naive, almost childish in its optimism. Experience teaches us that change can be sudden, discontinuous, and wrenching. Calculus draws its power by refusing to see that. It insists on a world without accidents, where one thing leads logically to another. Give me the initial conditions and the law of motion, and with calculus I can predict the future -- or better yet, reconstruct the past. I wish I could do that now.”