Lewis was reputedly born on his father's yacht off the Canadian province of Nova Scotia. His English mother and American father separated about 1893. His mother subsequently returned to England, where Lewis was educated, first at Rugby School, then at the Slade School of Art, University College, London, before spending most of the 1900s travelling around Europe and studying art in Paris.
Mainly residing in England from 1908, Lewis published his first work (accounts of his travels in Brittany) in Ford Madox Ford's The English Review in 1909. He was an unlikely founder-member of the Camden Town Group in 1911. In 1912 he exhibited his Cubo-Futurist illustrations to Timon of Athens (later issued as a portfolio, the proposed edition of Shakespeare's play never materialising) and three major oil-paintings at the second Post-Impressionist exhibition. This brought him into close contact with the Bloomsbury Group, particularly Roger Fry and Clive Bell, with whom he soon fell out.
It was in the years 1913-15 that he developed the style of geometric abstraction for which he is best known today, a style which his friend Ezra Pound dubbed "Vorticism". Lewis found the strong structure of Cubist painting appealing, but said it did not seem "alive" compared to Futurist art, which, conversely, lacked structure. Vorticism combined the two movements in a strikingly dramatic critique of modernity.
In his early visual works, particularly versions of village life in Brittany showing dancers (ca. 1910-12), Lewis may have been influenced by the process philosophy of Henri Bergson, whose lectures he attended in Paris. Though he was later savagely critical of Bergson, he admitted in a letter to Theodore Weiss (19 April 1949) that he "began by embracing his evolutionary system". Nietzsche was an equally important influence.
After a brief tenure at the Omega Workshops, Lewis quarrelled with the founder, Roger Fry over a commission to provide wall decorations for the Daily Mail Ideal Home Exhibition, which Lewis believed Fry had misappropriated. He walked out with several Omega artists to start a competing workshop called the Rebel Art Centre. The Centre operated for only four months, but it gave birth to the Vorticist group and the publication, BLAST. In BLAST Lewis wrote the group's manifesto, several essays expounding his Vorticist aesthetic (distinguishing it from other avant-garde practices), and a modernist drama, Enemy of the Stars. The magazine also included reproductions of now lost Vorticist works by Lewis and others.
For the Canadians he painted A Canadian Gun-Pit (1918, National Gallery of Canada, Ottawa) from sketches made on Vimy Ridge. For the British he painted one of his best known works, A Battery Shelled (1919, Imperial War Museum)(see ), drawing on his own experience in charge of a 6-inch howitzer at Ypres. Lewis exhibited his war drawings and some other paintings of the war in an exhibition, "Guns", in 1918.
His first novel Tarr was also published in book-form in 1918, having been serialised in The Egoist during 1916-17. It is widely regarded as one of the key modernist texts. Lewis later documented his experiences and opinions of this period of his life in the autobiographical Blasting and Bombardiering (1937), which covered his life up to 1926.
After the war, Lewis resumed his career as a painter, with a major exhibition, Tyros and Portraits, at the Leicester Galleries in 1921. "Tyros" were satirical caricatural figures intended by Lewis to comment on the culture of the "new epoch" that succeeded the First World War. A Reading of Ovid and Mr Wyndham Lewis as a Tyro are the only surviving oil paintings from this series. As part of the same project, Lewis also launched his second magazine, The Tyro, of which there were only two issues. The second (1922) contained an important statement of Lewis's visual aesthetic: "An Essay on the Objective of Plastic Art in our Time". It was during the early 1920s that he perfected his incisive draughtsmanship.
By the late 1920s, he was not painting so much, but instead concentrating on writing. He launched yet another magazine, The Enemy (three issues, 1927-29), largely written by himself and declaring its belligerent critical stance in its title. The magazine, and the theoretical and critical works he published between 1926 and 1929, mark his deliberate separation from the avant-garde and his previous associates. Their work, he believed, failed to show sufficient critical awareness of those ideologies that worked against truly revolutionary change in the West. As a result their work became a vehicle for these pernicious ideologies. His major theoretical and cultural statement from this period is The Art of Being Ruled (1926). Time and Western Man (1927) is a cultural and philosophical discussion that includes penetrating critiques of James Joyce, Gertrude Stein and Ezra Pound that are still read. In the domain of philosophy, Lewis attacked the "time philosophy" (i.e. process philosophy) of Bergson, Samuel Alexander, Alfred North Whitehead and others.
Lewis's novels are known among some critics for their satirical and hostile portrayals of Jews, homosexuals, lesbians and other minorities. The 1918 novel Tarr was revised and republished in 1928. In an expanded incident a new Jewish character is given a key role in making sure a duel is fought. This has been interpreted as an allegorical representation of a supposed Zionist conspiracy against the West. The Apes of God (1930) has been interpreted similarly, because many of the characters satirised are Jewish, including the modernist author and editor Julius Ratner, a portrait which blends anti-semitic stereotype with historical literary figures (John Rodker and James Joyce; though the Joyce element consists solely in the use of the word "epiphany" in the parody of Rodker included in the novel). A key feature of these interpretations is that Lewis is held to have kept his conspiracy theories hidden and marginalised. Since the publication of Anthony Julius's T. S. Eliot, Anti-Semitism, and Literary Form (1995, revised 2003), where Lewis's anti-semitism is described as "essentially trivial", this view is no longer taken seriously.
During the years 1934-37 Lewis wrote The Revenge for Love (1937) set in the period leading up to the Spanish Civil War, regarded by many as his best novel. It is strongly critical of communist activity in Spain, and presents English intellectual fellow-travellers as deluded.
Lewis's writing is in places undoubtedly offensive to minorities, but it is also offensive about majorities. When he somewhat belatedly recognized the reality of Nazi treatment of Jews after a visit to Berlin in 1937, he wrote an attack on anti-semitism: The Jews, Are They Human? (published early in 1939; the title is modelled on a contemporary bestseller, The English, Are They Human?). The book was favourably reviewed in The Jewish Chronicle.
Lewis' interests and activities in the 1930s were by no means exclusively political. Despite serious illness necessitating several operations, he was very productive as a critic and painter, and produced a book of poems, One-Way Song, in 1933 (the link below gives access to a recording of him reading an extract). He also produced a revised version of Enemy of the Stars, first published in Blast in 1914 as an example to his literary colleagues of how Vorticist literature should be written. It is a proto-absurdist, Expressionist drama, and some critics have identified it as a precursor to the plays of Samuel Beckett. An important book of critical essays also belongs to this period: Men without Art (1934). It grew out of a defence of Lewis's own satirical practice in The Apes of God, and puts forward a theory of 'non-moral', or metaphysical, satire. But the book is probably best remembered for one of the first commentaries on Faulkner, and a famous essay on Hemingway.
Lewis then also produced many of the portraits for which he is well-known, including pictures of Edith Sitwell (1923-36), T. S. Eliot (1938 and again in 1949) and Ezra Pound (1939). The rejection of the 1938 portrait of Eliot by the selection committee of the Royal Academy for their annual exhibition caused a furore, with front-page headlines prompted by the resignation of Augustus John in protest. However, no less an authority than Walter Sickert once claimed that: 'Wyndham Lewis [is] the greatest portraitist of this or any other time', though it was left to Lewis to make this statement public.
Other works include Mrs. Duke's Millions (written about 1908-9 but not published until 1977); Snooty Baronet (a satire on behaviorism, 1932);The Red Priest (his last novel, 1956), Rotting Hill (short stories depicting life in England during the post-war period of "austerity"); and The Demon of Progress in the Arts (on extremism in the visual arts, 1954).
In recent years there has been a renewal of critical and biographical interest in Lewis and his work, and he is now regarded as a major British artist and writer of the twentieth century. An exhibition of his books, magazines, paintings and drawings was held at Rugby School in November 2007 to commemorate the 50th anniversary of his death. The National Portrait Gallery is currently (2008) running a major retrospective of his portraits, ending on the 19 October. Oxford World Classics plans to reissue the 1928 text of Tarr in 2010.