In the book "Morality for Beautiful Girls" by Alexander McCall Smith, the idea of familial conflict is explored through the notion that emotional issues can be more damaging than physical ones. The author suggests that jealousy among family members creates a toxic environment, which can lead to deep-seated resentment if left unaddressed.

Rather than focusing on external threats, the text emphasizes the importance of open communication. The 'poison' that arises from unspoken jealousy can fester in personal relationships, suggesting that honest dialogue is essential for maintaining harmony and understanding within families.