Past the sixties, away along towards the seventies, and yet hale, healthy and vigorous! Why should I not live a century?

The five generally recognized forces are, the mechanical, which fashioned the earth into an oblate spheroid; the chemical, which, uniting oxygen and hydrogen, constitutes water; the vital, which constructs the organisms of plants and the lower orders of existence; the psychical, which gives instinct and animal locomotion, and the spiritual, which involves and evolves thought, desires and aspirations for immortality. But connected in a degree with all force is the divine force, the divine life - God I And if these five forces are kept in due balance; if supply regularly takes the place of waste in the human system, why should we not live a hundred years?