On undecidable existential sentences

In each stage of pregnancy there is the possibility of a spontaneous abortion. It was proven on the base of many observations that the frequency of such abortions reaches to 66 % of gestations. So we are dealing with a natural eugenics. The Nature takes care of the quality of life. Can we do the same when the Nature is not able to succeed? This question and other similar ones will be asked in the book. The book is composed of three chapters. In the first there will be presented the main subject of the book i.e. the undecidable existential sentences. The second is entitled ¿Natural still ongoing Big Bang of life, Consciousness and Intelligence on Earth and the probable Pan-psycho-somatic nature of the Universe. The third entitled ¿The return to biblical anthropology in Catholic Church¿ showing how this Christian Community resolve the problem of the belief that God in the moment of conception creates a spiritual and immortal soul.