What is the biggest transcendentalist theme in the movie "The Truman Show"?
The biggest transcendentalist theme in this movie is the idea of listening to your own inner voice rather than listenting to what society is telling you. You are supposed to go with what you believe, not conform to society's ways.
You can see this in the whole premise of the movie. Truman Burbank has lived his whole life in a way that has been set up for him. For him, it's by a TV show, but transcendentalists say a lot of us live like that because we just do what society says we should. But eventually, he starts to listen to his inner voice and he manages to break away from that existence.