Voltaire's belief in freedom of speech and religious tolerance is still highly relevant in today's diverse societies, advocating for respect and understanding among different belief systems.
Rousseau's idea of the social contract and the importance of individual rights and participation in government has influenced modern democratic principles and the concept of citizen responsibility.
Montesquieu's theory of the separation of powers has shaped the foundation of many modern political systems, promoting checks and balances to prevent abuse of power and to safeguard individual freedoms.