"How God sees the world" is a message of peace on Earth, an invitation to Christians and the world to become peaceful and meek like angels, an invitation to mankind to become compassionate and stand together to combat pollution and the global warming of the Earth. "How God sees the world" is the Bible, Western philosophy, Mathematics, Literature, Science and Life. The book is unique and revolutionary in the history of humanity because the author uses mathematical reasoning to prove the truths in religion, philosophy, and life. The author is an advocate of the renaissance civilization and zero growth as was recommended by the Club of Rome in the book entitled "The Limits to growth". The author explains the mysteries of Satan and original sin by using Personnalism, Phenomenology, Existentialism, and Mathematics. Mathematics is logic and the art of reasoning. The author demonstrates mathematically and biblically that a Christian is a saint, a communist, or a neutral being. That is to say humanity must become communist or brotherly to hope to solve the problems of pollution, unemployment, violence, poverty, health, crime, wars, etc. This means humanity must become communist or brotherly if it wants to survive.