"Marc, what is a friend?"

"people who are always with you, Chel."

"what do they do for you?"

"they play with you all day until you're tired."

"you mean they help you fall asleep?"

"yes."

"why?"

"so you can wake up the next morning and play again!"

"what if we are sad?"

"friends will make you happy."

"what if we are happy?"

"then they are happy, too."