The principle of materialized world is the same as of human life. The human life is governed by the human mind composedof the copies of the materialized world. The stress is due to the human mind inside. The creativity is prevented by the copies inthe human mind. The convergence is not easy due to the individual copy world which is different from each other. Bysubtraction of the copies inside the human, the creativity and convergence can be fulfilled. Syllabus of the lecture at KAIST isintroduced. Students taking the lecture express the non-materialized world of human mind clearly after the subtraction the copiesinside. The students who recognize the stress inside specifically can be free from the stress by discarding the copies inside.