<P> Encyclopedia: Surrealism . Philosophy . Surrealism is based on the belief in the superior reality of certain forms of previously neglected associations, in the omnipotence of dream, in the disinterested play of thought . It tends to ruin once and for all other psychic mechanisms and to substitute itself for them in solving all the principal problems of life . </P> <P> The Bureau of Surrealist Research (Centrale Surréaliste) was the center for Surrealist writers and artists to meet, hold discussions, and conduct interviews . They investigated speech under trance . </P> <P> The movement in the mid-1920s was characterized by meetings in cafes where the Surrealists played collaborative drawing games, discussed the theories of Surrealism, and developed a variety of techniques such as automatic drawing . Breton initially doubted that visual arts could even be useful in the Surrealist movement since they appeared to be less malleable and open to chance and automatism . This caution was overcome by the discovery of such techniques as frottage and decalcomania . </P> <P> Soon more visual artists became involved, including Giorgio de Chirico, Max Ernst, Joan Miró, Francis Picabia, Yves Tanguy, Salvador Dalí, Luis Buñuel, Alberto Giacometti, Valentine Hugo, Méret Oppenheim, Toyen, Kansuke Yamamoto and later after the second war: Enrico Donati . Though Breton admired Pablo Picasso and Marcel Duchamp and courted them to join the movement, they remained peripheral . More writers also joined, including former Dadaist Tristan Tzara, René Char, and Georges Sadoul . </P>

Who used the concept of surrealism in his work