How we cite our quotes:
"One of the original uses of these nurseries was so that we could study the patterns left on the walls by the child's mind, study at our leisure, and help the child." (195)
David McClean is our walk-on expert and here he is, walk-on experting. It's funny to us that this consumer toy actually started out as a medical tool. So maybe the Hadley family would be okay if the nursery had remained a medical gadget? Maybe it's like a scalpel: useful for a doctor, but not good for a ten-year old.
"You can't do that to the nursery, you can't!'' (223)
Notice that Peter says "to the nursery" rather than "with," which kind of makes the nursery sound like a person. (You do actions with objects, but to people.) Do you think Peter personifies the nursery here? Are we just being nitpicky?
"Why, you'd starve tomorrow if something went wrong in your kitchen. You wouldn't know how to tap an egg." (203)
Dr. McClean tells George that, just like a baby, George would starve if he didn't have something (not someone) taking care of him. Of course, this makes sense because Dr. McClean's doctoral degree is in telling people how they're messed up. Notice that Bradbury uses some regular cooking issue—cooking eggs—rather than something futuristic like rehydrating a pizza.