“I had to go to the school nurse yesterday because my stomach hurt...""You worry too much, Charlie Brown... No wonder your stomach hurts... You've got to stop all this silly worrying!""How do I stop?""That's your worry! Five cents, please!”

“I think I know what's wrong with you... Walk up onto that pitcher's mound... Does your stomach hurt now?""Yes! Ow! Ooo! Yes!""All right, now come down off the mound... There... Has it stopped hurting?""Yes... Yes, I think it has!""There's your trouble... Five cents, please!”

“The missing piece in his stomach hurt so much-and eventually he stopped thinking about the Theorem and wondered only how something that isn't there can hurt you.”

“Never worry about tomorrow, Charlie Brown. Tomorrow will soon be today, and before you know it, today will be yesterday! I always worry about the day after tomorrow!”

“So perhaps the greatest worry of all was that one day you would realize that all the worries of your life amounted to one thing: the desire to just stop worrying.”

“Nothing. It is nothing. Stop worrying about me.""I can't stop worrying about you.”