How was Sigmund Freud important to the Surrealist art movement?

Sigmund Freud's psychoanalytic theories, particularly around the unconscious mind and dream analysis, greatly influenced Surrealist artists like Salvador Dalí and René Magritte. Freud's ideas on the power of the subconscious and repressed desires inspired Surrealists to explore their own psyche in their art, leading to dreamlike, fantastical, and sometimes unsettling imagery in their works.