Just don’t give him anything controversial … No crazy political stuff, and no overboard violence. He reads like a grownup, but he’s just nine, and barely that.
-- Craig's Dad ("Mr. Harrigan's Phone")

Importance: When Mr. Harrigan asks Craig to come and work for him, Craig's dad agrees, but he wants to make sure that Craig will not be corrupted by the older, wealthier man. This quote is important because it shows that Craig's dad is concerned for his son's innocence, while Mr. Harrigan, who gives Craig inappropriate books to read, is not concerned with such things.

He was like the old maiden aunt who takes an experimental mouthful of brandy after sixty years of abstinence and becomes a genteel alcoholic almost overnight.
-- Craig ("Mr. Harrigan's Phone")

Importance: When Craig first gives the iPhone to Mr. Harrigan, he does not want it. This quote is important because it shows how quickly Mr. Harrigan went from a luddite to an addict.

I...
-- Craig ("Mr. Harrigan's Phone")