In Roald Dahl's book "Matilda," the character's determination is highlighted through a personal motto that emphasizes the importance of believing in one's abilities. The quote, "I've always said to myself that if a little pocket calculator can do it why shouldn't I?" reflects Matilda’s confidence in her intelligence and potential, suggesting that if simple machines can perform complex tasks, then surely a bright and capable young girl like her should not underestimate her own skills.

This perspective embodies the theme of empowerment and self-belief in the story. Matilda, despite facing challenges and adversity, harnesses her intellect and resourcefulness, proving that determination and the right mindset can lead to extraordinary achievements. Her journey serves as an inspiration for readers to recognize and embrace their own capabilities.