"Christianity believes that the human being will live forever, and this must be either true or false. Now, there would a good many things that would not be worth bothering about if I were going to live only 70 years, but I would better bother about very seriously if I were going to live forever. Perhaps my bad temper or my jealousy are gradually getting worse. So gradually that the increase in 70 years will not be so noticeable, but it might be absolute hell in a million years. In fact, if Christianity is true, hell is precisely the correct technical term for what it would be. And immortality makes this other difference which by the by has the connection between totalitarianism and democracy. If individuals live only 70 years, then a State or nation or a civilization that would live for 1,000 years is more important than the individual. But if Christianity is true, then the individual is not only more important, but incomparably more important, for he is ever lasting and the life of a State or civilization is only a moment, compared with his."
C.S. Lewis from his book, Mere Christianity