How does John Irving use imagery in The World According to Garp?

Examples of Imagery:

"Imagining something is better than remembering something."

"Life is sadly not structured like a good old-fashioned novel."

“If you are careful,' Garp wrote, 'if you use good ingredients, and you don't take any shortcuts, then you can usually cook something very good. Sometimes it is the only worthwhile product you can salvage from a day; what you make to eat. With writing, I find, you can have all the right ingredients, give plenty of time and care, and still get nothing. Also true of love. Cooking, therefore, can keep a person who tries hard sane.”