John Locke's ideas significantly influenced modern political thought, particularly concerning the concepts of natural rights and the social contract. Locke argued that individuals possess inherent rights to life, liberty, and property, which should be protected by government. His belief in the social contract posits that power derives from the consent of the governed, a radical departure from absolute monarchy. Locke's writings laid the groundwork for democratic systems, emphasizing the importance of individual freedoms and government accountability. His thoughts informed both the American and French Revolutions, solidifying his role as a foundational figure in modern political philosophy.