I. The Persona
Beyond all the mundane details, I place all my faith in Antonin Artaud, that man of prodigies. I salute Antonin Artaud for his passionate, heroic negation of everything that causes us to be dead while alive.
André Breton, A Tribute to Antonin Artaud
It's easy to see why the Beats liked Antonin Artaud. Born at the end of the 19th century, moving in the French avant-garde and surrealist circles of the 20s and 30s, and dead by 1948, Artaud embodied a familiar figure in the history of literature: the poète maudit. Mentally ill, destitute, living in and out of asylums, addicted to opiates and experimenting with harder drugs, Artaud had probed the depths of human experience. He was the artist outside the system, the artist against the system, rejecting "everything that causes us to be dead while alive." He even rebelled against surrealism and left Breton's circle in 1927 (he rebelled against the rebellion, as Carl Solomon, who identified quite strongly with Artaud, admiringly put it).
Artaud's works and lifestyle made him unlikely to appeal to the bourgeois and be recuperated into mass culture, the way Dali or Breton had. This was a point in his favor with the American literary circles, which despised the commercial appropriation of surrealism. But there was another aspect that might have made him attractive to Beat writers in particular: his emphasis on (rather woo-ish) spirituality, which, like in their case, came with a hefty dose of cultural appropriation. Before Kerouac and his friends made it to Mexico to wax poetic about the "Fellahins," Artaud was there, living with the Tarahumara people, eating peyote and denouncing Western civilization. (His experimenting with peyote, documented in his memoir, fueled Ginsberg's own.) His most famous book, The Theatre and Its Double, praised the virtues of Oriental theater, still based (according to him) on magic, spirituality and ritual. His reformed theater, the theater of cruelty, was designed to bring Western theater, tainted by the domination of words and psychology, closer to this model.