Piety

We've increased our temporal range to the point where it's not at all unusual to meet active and alert people who've passed the century mark. Society has done that by a system of care which is pre-prenatal, by seeing to it that every human being grows up in the best possible environment and receives the best possible nutrition, and by prophylactic measures of all possible sorts. In a word, we've eliminated from human life all the stresses and strains which can be eliminated. And that's the nearest to immortality we'll ever get.