The quote "Tyrants come and go, tyranny is constant" from Dick Francis's book "Trial Run" encapsulates the idea that while individual rulers may rise and fall, the essence of oppression and cruelty remains persistent throughout history. This suggests a cyclical nature of power where new leaders may emerge, but the underlying issues of control and subjugation often remain unchanged.

Francis's statement serves as a reflection on the durability of tyranny, reminding readers that the struggle against oppression is an ongoing battle. It emphasizes the need for vigilance and resilience in the face of authoritarianism, as the fight for freedom and justice continues despite the turnover of leadership. The enduring nature of tyranny calls for awareness and proactive measures to combat it.