Every human life contributes to humanity as a whole, no matter what you are doing for society. In "Pay It Forward," one person's actions can impact the lives of others and then more people after that - like a ripple. People participating in the movement are changing society little by little. They are speaking out through actions and not words. That is a trait of a transcendentalist, making a change and doing what you think is right.
Trevor is a transcendentalist himself. He thought of this idea on his own and even though his idea sometimes failed, he never gave up. He never became a follower of another person. It is very hard for a 7th grader to live like he did. Trevor is a strong, independent boy whose movement could change the world. Pay It Forward is a great movie that shows transcendentalism in many ways.