John Milton's writings significantly shaped the development of English literature, particularly through his epic poem "Paradise Lost." His innovative use of blank verse and exploration of complex themes such as free will, divine justice, and human fallibility challenged traditional literary forms and encouraged greater expressive depth. Milton's advocacy for freedom of speech and arguments for individual rights also influenced the Enlightenment and subsequent political thought. His works laid the groundwork for future writers, shaping the landscape of poetry and prose in the English literary canon.