Min Jin Lee said this quote
“ Casey glanced at her plate again, recalling the posters of her elementary school lunchroom: YOU ARE WHAT YOU EAT. So, how much you ate indicated the quantity of your desire. Walter was also implying that how quickly you got your food revealed the likelihood of achieving your goals. She was in fact terribly hungry, but she'd pretended to be otherwise to be ladylike and had moved away from the table to be agreeable, and now she'd continue to be hungry (Free Food For Millionaires, p.92.) ”