John Milton (9 December 1608 – 8 November 1674) was an English poet, polemicist, and civil servant for the Commonwealth of England. He is best known for his epic poem Paradise Lost.

He was a scholarly man of letters, a polemical writer, and an official serving under Oliver Cromwell. He wrote at a time of religious flux and political upheaval in England, and his poetry and prose reflect deep convictions and deal with contemporary issues, such as his treatise condemning censorship, Areopagitica. As well as English, he wrote in Latin and Italian, and had an international reputation during his lifetime. After his death, Milton's critical reception oscillated, a state of affairs that continued through the centuries. At an early stage he became the subject of partisan biographies, such as that of John Toland from the nonconformist perspective, and a hostile account by Anthony à Wood. Samuel Johnson wrote unfavourably of his politics as those of "an acrimonious and surly republican"; but praised Paradise Lost "a poem which, considered with respect to design may claim the first place, and with respect to performance, the second, among the productions of the human mind". William Hayley's 1796 biography called him the "greatest English author". He remains generally regarded "as one of the preeminent writers in the English language and as a thinker of world importance." The phases of Milton's life parallel the major historical and political divisions in Stuart Britain. Under the increasingly personal rule of Charles I and its breakdown in constitutional confusion and war, Milton studied, travelled, wrote poetry mostly for private circulation, and launched a career as pamphleteer and publicist. Under the Commonwealth of England, from being thought dangerously radical and even heretical, the shift in accepted attitudes in government placed him in public office, and he even acted as an official spokesman in certain of his publications. The Restoration of 1660 deprived Milton, now completely blind, of his public platform, but this period saw him complete most of his major works of poetry. Milton had a great impact on the Romantic movement in England, as shown in fellow poet William Wordsworth's sonnet London, 1802. Wordsworth calls upon him to rise from the dead and aid in returning England to its former glory. Milton's views developed from his very extensive reading, as well as travel and experience, from his student days of the 1620s to the English Revolution. By the time of his death in 1674, Milton was impoverished and on the margins of English intellectual life, yet unrepentant for his political choices, and of Europe wide fame.

John Milton was born in Bread Street, London, on 9 December 1608, as the son of the composer John Milton and his wife Sarah Jeffrey. The senior John Milton (1562 – 1647) moved to London around 1583 after being disinherited by his devout Catholic father, Richard Milton, for embracing Protestantism. In London, the senior John Milton married Sarah Jeffrey (1572 – 1637), the poet's mother, and found lasting financial success as a scrivener. He lived in, and worked from, a house on Bread Street, where the Mermaid Tavern was located in Cheapside. The elder Milton was noted for his skill as a musical composer, and this talent left Milton with a lifetime appreciation for music and friendship with musicians such as Henry Lawes. Milton's father's prosperity provided his eldest son with a private tutor, Thomas Young, and then a place at St Paul's School in London. There he began the study of Latin and Greek, and the classical languages left an imprint on his poetry in English (he wrote also in Italian and Latin). His first datable compositions are two psalms done at age 15 at Long Bennington. One contemporary source is the Brief Lives of John Aubrey, an uneven compilation including first hand reports. In the work, Aubrey quotes Christopher, Milton's younger brother: "When he was young, he studied very hard and sat up very late, commonly till twelve or one o'clock at night".

Milton matriculated at Christ's College, Cambridge, in 1625 and graduated with a B.A. in 1629, ranking fourth of 24 honours graduates that year in the University of Cambridge. Preparing to become an Anglican priest, he stayed on to obtain his Master of Arts degree on 3 July 1632.

Milton was probably rusticated for quarrelling in his first year with his tutor, William Chappell. He was certainly at home in the Lent Term 1626; there he wrote his Elegia Prima, a first Latin elegy, to Charles Diodati, a friend from St Paul's. Based on remarks of John Aubrey, Chappell "whipt" Milton. This story is now disputed. Certainly Milton disliked Chappell. Christopher Hill cautiously notes that Milton was "apparently" rusticated, and that the differences between Chappell and Milton may have been either religious or personal, as far as we can know. Another factor, possibly, was the plague, by which Cambridge was badly affected in 1625. Later in 1626 Milton's tutor was Nathaniel Tovey.

At Cambridge Milton was on good terms with Edward King, for whom he later wrote Lycidas. He also befriended Anglo - American dissident and theologian, Roger Williams. Milton tutored Williams in Hebrew in exchange for lessons in Dutch. Otherwise at Cambridge he developed a reputation for poetic skill and general erudition, but experienced alienation from his peers and university life as a whole. Watching his fellow students attempting comedy upon the college stage, he later observed 'they thought themselves gallant men, and I thought them fools'. Milton, due to his hair, which he wore long, and his general delicacy of manner, was known as the "Lady of Christ's". The university curriculum was dour, and he worked towards formal debates on topics, conducted in Latin. Yet his corpus is not devoid of humour, notably his sixth prolusion and his epitaphs on the death of Thomas Hobson. While at Cambridge he wrote a number of his well known shorter English poems, among them On the Morning of Christ's Nativity, his Epitaph on the admirable Dramatick Poet, W. Shakespeare, his first poem to appear in print, L'Allegro and Il Penseroso.

Upon receiving his M.A. in 1632, Milton retired to Hammersmith, his father's new home since the previous year. He also lived at Horton, Berkshire, from 1635 and undertook six years of self-directed private study. Christopher Hill points out that this was not retreat into a rural or pastoral idyll at all: Hammersmith was then a "suburban village" falling into the orbit of London, and even Horton was becoming deforested, and suffered from the plague. He read both ancient and modern works of theology, philosophy, history, politics, literature and science, in preparation for a prospective poetical career. Milton's intellectual development can be charted via entries in his commonplace book (like a scrapbook), now in the British Library. As a result of such intensive study, Milton is considered to be among the most learned of all English poets; in addition to his years of private study, Milton had command of Latin, Greek, Hebrew, French, Spanish, and Italian from his school and undergraduate days; he also added Old English to his linguistic repertoire in the 1650s while researching his History of Britain, and probably acquired proficiency in Dutch soon after.

Milton continued to write poetry during this period of study: his Arcades and Comus were both commissioned for masques composed for noble patrons, connections of the Egerton family, and performed in 1632 and 1634 respectively. Comus argues for the virtuousness of temperance and chastity. He contributed his pastoral elegy Lycidas to a memorial collection for one of his Cambridge classmates. Drafts of these poems are preserved in Milton’s poetry notebook, known as the Trinity Manuscript because it is now kept at Trinity College, Cambridge.

In May 1638, Milton embarked upon a tour of France and Italy that lasted up to July or August 1639. His travels supplemented his study with new and direct experience of artistic and religious traditions, especially Roman Catholicism. He met famous theorists and intellectuals of the time, and was able to display his poetic skills. For specific details of what happened within Milton's "grand tour", there appears to be just one primary source: Milton's own Defensio Secunda. Although there are other records, including some letters and some references in his other prose tracts, the bulk of the information about the tour comes from a work that, according to Barbara Lewalski, "was not intended as autobiography but as rhetoric, designed to emphasise his sterling reputation with the learned of Europe."

He first went to Calais, and then on to Paris, riding horseback, with a letter from diplomat Henry Wotton to ambassador John Scudamore. Through Scudamore, Milton met Hugo Grotius, a Dutch law philosopher, playwright and poet. Milton left France soon after this meeting. He travelled south, from Nice to Genoa, and then to Livorno and Pisa. He reached Florence in July 1638. While there, Milton enjoyed many of the sites and structures of the city. His candour of manner and erudite neo-Latin poetry made him friends in Florentine intellectual circles, and he met the astronomer Galileo, who was under virtual house arrest at Arcetri, as well as others. Milton probably visited the Florentine Academy and the Academia della Crusca along with smaller academies in the area including the Apatisti and the Svogliati.

He left Florence in September to continue to Rome. With the connections from Florence, Milton was able to have easy access to Rome's intellectual society. His poetic abilities impressed those like Giovanni Salzilli, who praised Milton within an epigram. In late October, Milton, despite his dislike for the Society of Jesus, attended a dinner given by the English College, Rome, meeting English Catholics who were also guests, theologian Henry Holden and the poet Patrick Cary. He also attended musical events, including oratorios, operas and melodramas. Milton left for Naples toward the end of November, where he stayed only for a month because of the Spanish control. During that time he was introduced to Giovanni Battista Manso, patron to both Torquato Tasso and to Giovanni Battista Marino.

Originally Milton wanted to leave Naples in order to travel to Sicily, and then on to Greece, but he returned to England during the summer of 1639 because of what he claimed, in Defensio Secunda, were "sad tidings of civil war in England." Matters became more complicated when Milton received word that Diodati, his childhood friend, had died. Milton in fact stayed another seven months on the continent, and spent time at Geneva with Diodati's uncle after he returned to Rome. In Defensio Secunda, Milton proclaimed he was warned against a return to Rome because of his frankness about religion, but he stayed in the city for two months and was able to experience Carnival and meet Lukas Holste, a Vatican librarian, who guided Milton through its collection. He was introduced to Cardinal Francesco Barberini who invited Milton to an opera hosted by the Cardinal. Around March Milton travelled once again to Florence, staying there for two months, attending further meetings of the academies, and spent time with friends. After leaving Florence he travelled through Lucca, Bologna, and Ferrara before coming to Venice. In Venice Milton was exposed to a model of Republicanism, later important in his political writings, but he soon found another model when he travelled to Geneva. From Switzerland, Milton travelled to Paris and then to Calais before finally arriving back in England in either July or August 1639.

On returning to England, where the Bishops' Wars presaged further armed conflict, Milton began to write prose tracts against episcopacy, in the service of the Puritan and Parliamentary cause. Milton's first foray into polemics was Of Reformation touching Church Discipline in England (1641), followed by Of Prelatical Episcopacy, the two defences of Smectymnuus (a group of presbyterian divines named from their initials: the "TY" belonged to Milton's old tutor Thomas Young), and The Reason of Church - Government Urged against Prelaty. With frequent passages of real eloquence lighting up the rough controversial style of the period, and deploying a wide knowledge of church history, he vigorously attacked the High - church party of the Church of England and their leader, William Laud, Archbishop of Canterbury.

Though supported by his father’s investments, at this time Milton became a private schoolmaster, educating his nephews and other children of the well-to-do. This experience, and discussions with educational reformer Samuel Hartlib, led him to write in 1644 his short tract, Of Education, urging a reform of the national universities.

In June 1643 Milton paid a visit to the manor house at Forest Hill, Oxfordshire, and returned with a 16 year old bride, Mary Powell. A month later, finding life difficult with the severe 35 year old schoolmaster and pamphleteer, Mary returned to her family. Because of the outbreak of the Civil War, she did not return until 1645; in the meantime her desertion prompted Milton, over the next three years, to publish a series of pamphlets arguing for the legality and morality of divorce. (Anna Beer, one of Milton's most recent biographers, points to a lack of evidence and the dangers of cynicism in urging that it was not necessarily the case that the private life so animated the public polemicising.) In 1643 Milton had a brush with the authorities over these writings, in parallel with Hezekiah Woodward who had more trouble. It was the hostile response accorded the divorce tracts that spurred Milton to write Areopagitica, his celebrated attack on pre-printing censorship.

With the parliamentary victory in the Civil War, Milton used his pen in defence of the republican principles represented by the Commonwealth. The Tenure of Kings and Magistrates (1649) defended popular government and implicitly sanctioned the regicide; Milton’s political reputation got him appointed Secretary for Foreign Tongues by the Council of State in March 1649. Though Milton's main job description was to compose the English Republic's foreign correspondence in Latin, he also was called upon to produce propaganda for the regime and to serve as a censor. In October 1649 he published Eikonoklastes, an explicit defence of the regicide, in response to the Eikon Basilike, a phenomenal best seller popularly attributed to Charles I that portrayed the King as an innocent Christian martyr. A month after Milton had tried to break this powerful image of Charles I (the literal translation of Eikonoklastes is 'the image breaker'), the exiled Charles II and his party published a defence of monarchy, Defensio Regia Pro Carolo Primo, written by the leading humanist Claudius Salmasius. By January of the following year, Milton was ordered to write a defence of the English people by the Council of State. Given the European audience and the English Republic's desire to establish diplomatic and cultural legitimacy, Milton worked more slowly than usual, as he drew on the learning marshalled by his years of study to compose a riposte. On 24 February 1652 Milton published his Latin defence of the English People, Defensio Pro Populo Anglicano, also known as the First Defence. Milton's pure Latin prose and evident learning, exemplified in the First Defence, quickly made him a European reputation, and the work ran to numerous editions.

In 1654, in response to an anonymous Royalist tract   “Regii sanguinis clamor”, a work that made many personal attacks on Milton, he completed a second defence of the English nation, Defensio secunda, which praised Oliver Cromwell, now Lord Protector, while exhorting him to remain true to the principles of the Revolution. Alexander Morus, to whom Milton wrongly attributed the Clamor (in fact by Peter du Moulin), published an attack on Milton, in response to which Milton published the autobiographical Defensio pro se in 1655. In addition to these literary defences of the Commonwealth and his character, Milton continued to translate official correspondence into Latin. The probable onset of glaucoma finally resulted in total blindness by 1654, forcing him to dictate his verse and prose to amanuenses (helpers), one of whom was the poet Andrew Marvell. One of his best known sonnets, On His Blindness, is presumed to date from this period.

Milton and Mary Powell (1625 – 1652) had four children. Mary Powell died on 5 May 1652 from complications following Deborah's birth. Milton's daughters survived to adulthood, but he had always a strained relationship with them. On 12 November 1656, Milton remarried to Katherine Woodcock. She died on 3 February 1658, less than four months after giving birth to a daughter, Katherine, who also died. Two nephews, John Phillips and Edward Phillips, were well known as writers. They were sons of Milton's sister Anne. John acted as a secretary, and Edward was Milton's first biographer.

Though Cromwell’s death in 1658 caused the English Republic to collapse into feuding military and political factions, Milton stubbornly clung to the beliefs that had originally inspired him to write for the Commonwealth. In 1659 he published A Treatise of Civil Power, attacking the concept of a state dominated church (the position known as Erastianism), as well as Considerations touching the likeliest means to remove hirelings, denouncing corrupt practises in church governance. As the Republic disintegrated, Milton wrote several proposals to retain a non-monarchical government against the wishes of parliament, soldiers and the people:

• A Letter to a Friend, Concerning the Ruptures of the Commonwealth, written in October 1659, was a response to General Lambert's recent dissolution of the Rump Parliament;
• Proposals of certain expedients for the preventing of a civil war now feared, written in November 1659;
• The Ready and Easy Way to Establishing a Free Commonwealth, in two editions, responded to General Monck's march towards London to restore the Long Parliament (which led to the restoration of the monarchy). The work is an impassioned, bitter, and futile jeremiad damning the English people for backsliding from the cause of liberty and advocating the establishment of an authoritarian rule by an oligarchy set up by unelected parliament.

Upon the Restoration in May 1660, Milton went into hiding for his life, while a warrant was issued for his arrest and his writings burnt. He re-emerged after a general pardon was issued, but was nevertheless arrested and briefly imprisoned before influential friends, such as Marvell, now an MP, intervened. On 24 February 1663 Milton remarried, for a third and final time, a Wistaston, Cheshire born woman Elizabeth (Betty) Minshull, then aged 24, and spent the remaining decade of his life living quietly in London, only retiring to a cottage – Milton's Cottage – in Chalfont St. Giles, his only extant home, during the Great Plague of London.

During this period Milton published several minor prose works, such as a grammar textbook, Art of Logic, and a History of Britain. His only explicitly political tracts were the 1672 Of True Religion, arguing for toleration (except for Catholics), and a translation of a Polish tract advocating an elective monarchy. Both these works were referred to in the Exclusion debate – the attempt to exclude the heir presumptive, James, Duke of York, from the throne of England because he was Roman Catholic – that would preoccupy politics in the 1670s and '80s and precipitate the formation of the Whig party and the Glorious Revolution.

Milton died of kidney failure on 8 November 1674 and was buried in the church of St Giles Cripplegate; according to an early biographer, his funeral was attended by “his learned and great Friends in London, not without a friendly concourse of the Vulgar.”