.The English philosopher and political theorist John Locke (1632-1704) laid much of the groundwork for the Enlightenment and made central contributions to the development of liberalism. Trained in medicine, he was a key advocate of the empirical approaches of the Scientific Revolution. John Locke was among the most famous philosophers and political theorists of the 17th century. He is often regarded as the founder of a school of thought known as British Empiricism, and he made foundational contributions to modern theories of limited, liberal government..
English philosopher who advocated the idea of a "social contract" in which government powers are derived from the consent of the governed and in which the government serves the people; also said people have natural rights to life, liberty and property.