He told her about the little princess and the knight, the eldest lady and the butler.
"Then why does the housekeeper have to be so obedient?"
"Because he loves his eldest lady."
"Then why does the knight pamper the princess?"
"Because the knight loves his little princess deeply."
"Then they are very happy."
"You are also very happy."
"Why?"
"Because my brother loves you."
Purpose: Life is more important than anything else