published together in 1932 as Sweeney Agonistes. Although Eliot noted that this was not intended to be a one-act play, it is sometimes performed as one. A pageant play by Eliot called The Rock was performed in 1934 for the benefit of churches in the Diocese of London. Much of it was a collaborative effort; Eliot accepted credit only for the authorship of one scene and the choruses. George Bell, the Bishop of Chichester, had been instrumental in connecting Eliot with producer E. Martin Browne for the production of The Rock, and later commissioned Eliot to write another play for the Canterbury Festival in 1935. This one, Murder in the Cathedral, concerning the death of the martyr, Thomas Becket, was more under Eliot's control. Eliot biographer Peter Ackroyd comments that "for [Eliot], Murder in the Cathedral and succeeding verse plays offered a double advantage; it allowed him to practice poetry but it also offered a convenient home for his religious sensibility." After this, he worked on more "commercial" plays for more general audiences: The Family Reunion (1939), The Cocktail Party (1949), The Confidential Clerk, (1953) and The Elder Statesman (1958) (the latter three were produced by Henry Sherek and directed by E. Martin Browne). The Broadway production in New York of The Cocktail Party received the 1950 Tony Award for Best Play. Eliot wrote The Cocktail Party while he was a visiting scholar at the Institute for Advanced Study. Regarding his method of playwriting, Eliot explained, "If I set out to write a play, I start by an act of choice. I settle upon a particular emotional situation, out of which characters and a plot will emerge. And then lines of poetry may come into being: not from the original impulse but from a secondary stimulation of the unconscious mind." Literary criticism Eliot also made significant contributions to the field of literary criticism, and strongly influenced the school of New Criticism. He was somewhat self-deprecating and minimising of his work and once said his criticism was merely a "by-product" of his "private poetry-workshop". But the critic William Empson once said, "I do not know for certain how much of my own mind [Eliot] invented, let alone how much of it is a reaction against him or indeed a consequence of misreading him. He is a very penetrating influence, perhaps not unlike the east wind." In his critical essay "Tradition and