Tropic of Cancer (1934), Miller's most famous and acclaimed work, is a lyrical, profane, and surreal portrait of the author's experiences in the bohemian underworld of 1930s Paris. The novel was a personal and artistic break-through for Miller, who was an obscure and impoverished writer when it was first published. The theme of sexual and artistic liberation, which pervades Tropic of Cancer, manifests itself in its Whitmanesque poetic embrace of sexuality, its open disdain for the constraints of bourgeois society, and its declarations of antagonism toward the conventions of the modern novel. At one point Miller writes: "This is not a book … this is a prolonged insult, a gob of spit in the face of Art..." While some critics have dismissed Tropic of Cancer as a merely autobiographical rant which is reckless and nihilistic in its abandonment of literary conventions, others have recognized Miller's notoriously liberal use of profanity and sexual description as an attempt to broaden the expressive means of the novel. The unusually polemical and partisan tenor of much early criticism on Miller's novel should be considered against the background of its publication history. Before Grove Press won its censorship struggle in the early 1960s, Tropic of Cancer was ruled obscene and its sale was banned in the United States and England.