- 1Editor’s Introduction
- 2Preface
- 3Contents
- 4Part I — The Investigation of Old Age
- 5II — Theories of Causation of Senility
- 6III — Mechanism of Senility
- 7Part II — Longevity in the Animal Kingdom
- 8II — Longevity in the Animal Kingdom
- 9III — The Digestive System and Senility
- 10IV — Microbes as the Cause of Senility
- 11V — Duration of Human Life
- 12Part III — Investigations on Natural Death
- 13II — Natural Death in the Animal World
- 14III — Natural Death Amongst Human Beings
- 15Part IV — Should We Try to Prolong Human Life?
- 16II — Suggestions for the Prolongation of Life
- 17III — Diseases That Shorten Life
- 18IV — Intestinal Putrefaction Shortens Life
- 19V — Lactic Acid as Inhibiting Intestinal Putrefaction
- 20Part V — Psychical Rudiments in Man
- 21II — Human Traits of Character Inherited From Apes
- 22III — Somnambulism and Hysteria as Mental Relics
- 23Part VI — Some Points in the History of Social Animals
- 24II — Insect Societies
- 25III — Society and the Individual in the Human Race
- 26Part VII — Pessimism and Optimism
- 27II — Analysis of Pessimism
- 28III — Pessimism in Its Relation to Health and Age
- 29Part VIII — Goethe and Faust
- 30II — Goethe and Optimism
- 31III — Goethe’s Old Age
- 32IV — Goethe and “Faust”
- 33V — The Old Age of Faust
- 34Part IX — Science and Morality
- 35II — Morality and Human Nature
- 36III — Individualism
- 37IV — Orthobiosis
The Prolongation of Life
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