One of the most famous surrealists was Salvador Dali. Some of his work included small collages of his dream images. His work employed a meticulous classical technique that contradicted the "unreal dream" space that he created with strange characters that were "human-like," but altered.
Dalí used many methods to create a reality from his dreams and subconscious thoughts, thus mentally changing reality to what he wanted it to be and not necessarily what it was.
German-born Max Ernst was an innovative artist who mined his unconscious for dreamlike imagery that mocked social conventions. Ernst's artistic vision, along with his humor and verve come through strongly in his work. Ernst was a pioneer of the surrealist movement. His work with the unconscious, his social commentary, and broad experimentation in both subject and technique remain influential.
Rene Magritte created images that are beautiful in their clarity and simplicity, but which also provoke unsettling thoughts. They seem to declare that they hide no mystery, and yet they are also marvelously strange. His beautiful and troubling images of bowler-hatted men and nature scenes are popular in art and general circles.