The authors argue that there is indubitable evidence that our Solar System and the Mother Nature are the hotbed of life and the cradle of humanity, but not the perfect paradise. They claim humanity encountered and will continually encounter disasters, hardships and risks in human being’s history of survival and progress. Thus, they contend that facing the uncontrolled growing population, human beings should not be blindly optimistic because we cannot afford to leave the future and destiny of mankind to the free will of individual or small groups. Only the scientific decision-making, scientific management and scientific and technological progress could guarantee the safety of human being and the survivability of our future generations.