Wordsworth began attending St John's College, Cambridge in 1787. In 1790, he visited Revolutionary France and supported the Republican movement. The following year, he graduated from Cambridge without distinction. In November, he returned to France and took a walking tour of Europe that included the Alps and Italy. He fell in love with a French woman, Annette Vallon and in 1792 she gave birth to their child, Caroline. Because of lack of money and Britain's tensions with France, he returned alone to England that year, but he supported Vallon and his daughter as best he could in later life. The Reign of Terror estranged him from the Republican movement and war between France and Britain prevented him from seeing Annette and Caroline again for several years.

1793 saw Wordsworth's first published poetry with the collections An Evening Walk and Descriptive Sketches. He received a legacy of £900 from Raisley Calvert in 1795 so that he could pursue writing poetry. That year, he also met Samuel Taylor Coleridge in Somerset. The two poets quickly developed a close friendship. In 1797, Wordsworth and his sister, Dorothy, moved to Somerset, just a few miles away from Coleridge's home in Nether Stowey. Together, Wordsworth and Coleridge (with insights from Dorothy) produced Lyrical Ballads (1798), an important work in the English Romantic movement. One of Wordsworth's most famous poems, "Tintern Abbey" was published in the work, along with Coleridge's "Ancient Mariner". In the second edition of "Lyrical Ballads," published in 1802, Wordsworth included a preface to the poems. The Preface to "Lyrical Ballads" is considered a central work of Romantic literary theory. In the Preface, Wordsworth discusses what he sees as the constituents of a new type of poetry, one based on the "real language of men" and which avoids the poetic diction of much eighteenth-century poetry. Wordsworth also gives his famous definition of poetry in the Preface as "the spontaneous overflow of powerful feelings from emotions recollected in tranquility."

Wordsworth, Dorothy, and Coleridge then travelled to Germany. During the extremely harsh winter of 1798-1799, Wordsworth lived with Dorothy in Goslar, and despite extreme stress and loneliness, he began work on an autobiographical piece later titled The Prelude. He also wrote a number of famous poems, including "the Lucy poems." He and his sister moved back to England, now to Grasmere in the Lake District, and this time with fellow poet Robert Southey nearby. Wordsworth, Southey, and Coleridge came to be known as the "Lake Poets". Through this period, many of his poems revolve around themes of death, endurance, separation, and grief.

In 1802, he and Dorothy travelled to France to visit Annette and Caroline. Later that year, he married a childhood friend, Mary Hutchinson. Dorothy did not appreciate the marriage at first, but lived with the couple and later grew close to Mary. The following year, Mary gave birth to the first of five children, John.

Both Coleridge's health and his relationship to Wordsworth began showing signs of decay in 1804. That year Wordsworth befriended Robert Southey. With Napoleon's rise as emperor of France, Wordsworth's last wisp of liberalism fell, and from then on he identified himself as a conservative.

Wordsworth had for years been making plans to write a long philosophical poem in three parts, which he intended to call The Recluse. He had in 1798-99 started an autobiographical poem, which he never named but called the "poem to Coleridge", which would serve as an appendix to The Recluse. In 1804 he began expanding this autobiographical work, having decided to make it a prologue rather than an appendix to the larger work he planned. By 1805, he had completed it, but refused to publish so personal a work until he should have completed the whole of The Recluse. The death of his brother, John, in 1805 had a strong influence on him.

In 1807, his Poems in Two Volumes was published, including "Ode: Intimations of Immortality from Recollections of Early Childhood". Up to this point Wordsworth was known publicly only for Lyrical Ballads, and he hoped this collection would cement his reputation. Its reception was only lukewarm, however. For a time, Wordsworth and Coleridge were estranged over the latter's opium addiction.

Two of his children, Thomas and Catherine, died in 1812. The following year, he moved to Rydal Mount, Ambleside where he spent the rest of his life.

In 1814 he published The Excursion as the second part of the three-part The Recluse. He had not completed the first and third parts, and never would complete them. However, he did write a poetic Prospectus to "The Recluse" in which he lays out the structure and intent of the poem. The Prospectus contains some of Wordworth's most famous lines on the relation between the human mind and nature:

my voice proclaims
How exquisitely the individual Mind
(And the progressive powers perhaps no less
Of the whole species) to the external World
Is fitted:--and how exquisitely, too,
Theme this but little heard of among Men,
The external World is fitted to the Mind . . .

Some modern critics recognise a decline in his works beginning around the mid-1810s. But this decline was perhaps more a change in his lifestyle and beliefs, since most of the issues that characterise his early poetry (loss, death, endurance, separation, abandonment) were resolved in his writings. But, by 1820 he enjoyed the success accompanying a reversal in the contemporary critical opinion of his earlier works.

Dorothy suffered from a severe illness in 1829 that rendered her an invalid for the remainder of her life. In 1835, Wordsworth gave Annette and Caroline the money they needed for support. The government awarded him a civil list pension amounting to £300 a year in 1842.

With the death in 1843 of Robert Southey, Wordsworth became the Poet Laureate. When his daughter, Dora, died in 1847, his production of poetry came to a standstill. William Wordsworth died in Rydal Mount in 1850 and was buried at St Oswald's Church in Grasmere.

His widow Mary published his lengthy autobiographical "poem to Coleridge" as The Prelude several months after his death. Though this failed to arouse great interest in 1850, it has since come to be recognised as his masterpiece.

The Prelude

The Prelude is an autobiographical poem in blank verse by the English poet William Wordsworth. Wordsworth wrote the first version of the poem when he was 28, and worked over for the rest of his long life without publishing it. He never gave it a title; he called it the "poem to Coleridge" or the "poem on the growth of my own mind."

The work is a poetic reflection on Wordsworth's own sense of his poetic vocation as it developed over the course of his life in 14 books. It was intended to be the prologue to a long three-part philosophical poem Wordsworth planned to call The Recluse. Though Wordsworth planned this project when he was in his late 20s, he went to his grave at 80 years old having published only the second part (The Excursion), and leaving no more than fragments of the rest.

It was published after Wordsworth's death in 1850 by Wordsworth's widow Mary, who chose to name it The Prelude. The title was meant to suggest that it was written as the introduction to a longer work, and that it was one of the poet's earlier poems rather than his last.

The Prelude is by common consent the poet's greatest work; and it is noteworthy that Wordsworth's fame in his lifetime as the architect of Romantic Conservatism was actually achieved without it.