In 1984, during the intense torture sessions, O’Brien embodies the Party’s philosophy that the mind creates reality. Through his coercion, he pushes Winston to accept that what one believes is what truly exists, effectively making the mind the creator of matter. This is akin to teachings from esoteric mystery schools, where reality is seen as a mental construct. O’Brien’s insistence that four fingers can equal five isn’t just about obedience; it’s about reshaping Winston’s perception of truth itself. Through this, the Party reveals the terrifying extent of its control over individual thought and reality.