It is true that to some extent Surrealism can be all things to its practitioners, but this constant flux has a consistent central core: a redefinition of freedom in the widest possible terms.  With this objective, Surrealism set itself in stubborn opposition to all the mechanisms of oppression it perceived at work in the world.  Not only the obvious institutions of state, religion, the family etc. but also habits of thought, rationality, causality, the dominance of the conscious mind.  These mechanisms are seen by Surrealism as operating through a system of false dualities, based on Cartesian logic, which must be reconciled or abolished.

Alastair Brotchie & Mel Gooding, A Book of Surrealist Games.