This book is presented by its author as the sequel to his 1928 book on the same matter. It consists of three parts. The first presents those findings of the Natural Sciences that disprove the materialistic notions of the non existence of God. The second part studies the proofs of the existence of God and of the immortality of the soul. The third and final part is dedicated to showing how and why the Christian nations lead the Earth and why humanity without Christianity will devolve to barbarism.