A highly influential figure in the Age of Enlightenment in England and
France, whose works helped inspire the Declaration of Independence and
the U.S. Constitution, John Locke was one of the most important
political theorists in Western history. In The Second Treatise of
Government, a major contribution to the principles underlying modern
democracies, he achieved two objectives: refuting the concept of the
divine right of monarchy, and establishing a theory of government based
on the ultimate sovereignty of the people.
In A Letter Concerning Toleration, composed as early as 1667 but not
published for political reasons until 1689 -- after the "Glorious
Revolution" -- Locke pleaded for religious tolerance on grounds similar
to his argument for political freedom, i.e., that all men are by nature
"free, equal, and independent," and are entitled to freedom of thought,
freedom of speech, and freedom of worship. To help guarantee the latter
freedom, Locke called for separation of church and state.
The basis of social and political philosophy for generations, these
works laid the foundation of the modern democratic state in England and
abroad. Their enduring importance makes them essential reading for
students of philosophy, history, and political science.