“But, how can imagination and surrealism have duality. They seem one thing.”
Well, not one thing (in my opinion), but on the other hand, not exactly opposites either.
I honestly have no idea what the writer is trying to say in the quoted text.
I myself work with visual art, so I’m interested in what one can say meaningfully about it, but I often feel that people who write about art make very little sense. It’s like they just love to hear themselves talking - it doesn’t seem to matter to them that there is no real substance in what the say.