The author discusses sibling fights and the need to understand children's behaviors better. They question whether jealousy, competing for parental love, parenting styles, personality differences, or astrology influence siblings to be hostile towards each other. The author's children had a fight over a driving incident where both only seemed to listen to parts of the story that supported their side. The author wonders why they did not fully listen and if they truly hate each other or have different mindsets. They stress the importance of fully listening to avoid fights by engaging the ears before the mouth.