. John Locke was regarded as one of the most significant philosophers of the modern day. Liberalism was a theory that was introduced by Locke that made an exceptional contribution to modern philosophical empiricism. He made a major impact in areas of religious tolerance and educational theory. John Locke has accomplished making the first substantial inquiry in the field of linguistics by examining the role of language in human mental life; and being the first to explore modern concepts of identity and the self. Some of the best known later philosophers, such as Voltaire, Jean-Jacques Rousseau, David Hume and Immanuel Kant, built their philosophies on the foundation that Locke had laid out. John Locke is considered the first philosopher of