Milton argued, in 1649, after the execution of Charles I, that a people 'free by nature' had a right to overthrow a tyrant; a subject that recalls vividly the questions examined by Shakespeare in his major tragedies about fifty years before.
Milton continued to defend his ideals of freedom and republicanism. But at the Restoration, by which time he was blind, he was arrested. Various powerful contacts allowed him to be released after paying a fine, and his remaining years were devoted to the composition - orally, in the form of dictation to his third wife - of his epic poem on the fall of humanity, Paradise Lost, which was published in 1667.
It is interesting that - like Spenser and Malory before him, and like Tennyson two centuries later - Milton was attracted to the Arthurian legends as the subject for his great epic. But the theme of the Fall goes far beyond a national epic, and gave the poet scope to analyse the whole question of freedom, free will, and individual choice. He wished, he said, to 'assert eternal providence,/And justify the ways of God to men'. This has been seen as confirmation of Milton's arrogance, but it also signals the last great attempt to rationalise the spirit of the Renaissance: mankind would not exist outside Paradise if Satan had not engineered the temptation and fall of Adam and Eve. For many critics, including the poets Blake and Shelley, Satan, the figure of the Devil, is the hero of the poem.
