“what you don't know, you don't miss”
“If you don't know there's an alternative, you can't miss it”
“It took me a lifetime to realizethings don't get lost if they don't have value- you don't miss what you don't care about.”
“Don't you know, you idiot, that that is what every fool of a woman says about her child?Miss Bulstrode's thoughts.”
“When you don't know enough about life to know what you might have missed out on, your imagination plays wicked tricks on you.”
“They say you don't know what you don't know until you know that you don't know it.”