After being told he couldn't eat a cookie with an article referenced about effects of sugar: 

You base my life on articles.  You should go on your gut instinct.  Articles are other people's opinion. You read  and you read those parenting books, I know you do.  And they tell you if we get mad, to be more strict with them and then when that happens, we get more mad. Then its harder for you guys and you don’t know what to do because you never trust your instincts.  This is the truth.