John Milton (1608–1674) was an English poet, polemicist, man of letters, and civil servant for the Commonwealth of England under its Council of State and later under Oliver Cromwell. He wrote at a time of religious flux and political upheaval, and is best known for his epic poem Paradise Lost (1667), written in blank verse. Milton's poetry and prose reflect deep personal convictions, a passion for freedom and self-determination, and the urgent issues and political turbulence of his day.