„There can be no doubt that the youth of today have to be protected against certain poisonous effects inherent in present-day civilization. Five social diseases surround them, even in early childhood. There is the decline in fitness due to modern methods of locomotion; the decline in initiative due to the widespread disease of spectatoritis; the decline in care and skill due to the weakened tradition of craftsmanship; the decline in self-discipline due to the ever-present availability of tranquilizers and stimulants, and the decline in compassion, which William Temple called "spiritual death."“

„Health is normal. The human body is a self-repairing, self-defending, and self-healing marvel. Disease is relatively difficult to induce, considering the body’s powerful immune system. However, this complicated and delicate machinery can be damaged if fed the wrong fuel during the formative years. The chronic diseases commonly associated with aging—hypertension, coronary artery disease, Type II diabetes, degenerative joint disease, Parkinson’s, and Alzheimer’s, as well as most cancers—are not the inevitable outcome of the aging process; they are born out of wrong food choices earlier in life. Healthy living with nutritional excellence throughout life can slow the decline of aging. It can prevent the years and years of suffering in ill health that is so common today as people get older and become dependent on medical treatments, drugs, and surgery. Medical intervention does very little to slow the progression of illnesses and gradual mental and physical decline. Nutritional excellence is the only real fountain of youth.“

—  Joel Fuhrman Family Physician and author 1953

Fonte: Disease-Proof Your Child (2005), Ch. 1, p. 7

„I believe that our people’s traditional belief in the right of trial by jury is in perilous decline. That decline is bound to be confirmed, and indeed accelerated, by the repeated spectacle of a man’s going to his death because a judge found that an aggravating factor existed. We cannot preserve our veneration for the protection of the jury in criminal cases if we render ourselves callous to the need for that protection by regularly imposing the death penalty without it.“

—  Antonin Scalia former Associate Justice of the Supreme Court of the United States 1936 - 2016

Ring v. Arizona (2006) (concurring).
2000s

„The decline of Indian Buddhism was centrally due to the fact that it never offered the Indian laity a complete religion. Early Buddhism knew no ceremonies for birth and death, marriage, illness, and other critical turns of private life… Only for the community of monks did Buddhism provide a complete and well-defined way of life. …But Brahmins were needed for all the ordinary crises in life, ready with their rites and sacred formulas to ward off danger or minimize the damage. This elemental fact assured the survival of Brahminism in India.“

—  William H. McNeill, livro The Rise of the West: A History of the Human Community

The Rise of the West: A History of the Human Community (1963)

„Wherever there is degeneration and apathy, there also is sexual perversion, cold depravity, miscarriage, premature old age, grumbling youth, there is a decline in the arts, indifference to science, and injustice in all its forms.“

—  Anton Chekhov Russian dramatist, author and physician 1860 - 1904

Letter to A.S. Suvorin (December 27, 1889)
Letters

„[Fascism] was an explosion against intolerable conditions, against remediable wrongs which the old world failed to remedy. It was a movement to secure national renaissance by people who felt themselves threatened with decline into decadence and death and were determined to live, and live greatly.“

—  Oswald Mosley British politician; founder of the British Union of Fascists 1896 - 1980

Excerpt from My Life by Oswald Mosley (1968), Ch.16.

„No theory of government was ever given a fairer test or a more prolonged experiment in a democratic country than democratic socialism received in Britain. Yet it was a miserable failure in every respect. Far from reversing the slow relative decline of Britain vis-à-vis its main industrial competitors, it accelerated it. We fell further behind them, until by 1979 we were widely dismissed as 'the sick man of Europe'…To cure the British disease with socialism was like trying to cure leukaemia with leeches.“

—  Margaret Thatcher, livro The Downing Street Years

The Downing Street Years (1993)

„I think of genes in two ways. There are dictator genes. Those genes give orders—blue eyes or brown hair—and you don't have any choice. The genes for diabetes, heart disease, or certain forms of cancer, they're more like committees giving suggestions. But you've got a lot of control over whether those genes ever express themselves. The vista on diet-related disease is spreading out in a bigger way than we ever imagined. We thought maybe diet affected heart disease and a few cancers. Then there was diabetes. Now it's also brain disease—not only stroke but also Alzheimer's. We thought that was entirely due to genes and age. Now we know it's due, to a very substantial degree, to diet. We've got control. Not perfect control, but certainly control we never had before.“

—  Neal D. Barnard American physician, author, and clinical researcher 1953

Interview in the book What the Health https://books.google.it/books?id=FIY8DgAAQBAJ&pg=PT0 by Eunice Wong (Xlibris, 2017), ch. 1.

„In Poland, many doctors would not undertake euthanasia due to religious beliefs. The Dutch are more pragmatic, and death is not a great taboo for them, but part of the natural turn of things.“

—  Tomasz Vetulani Polish artist 1965

Tomasz Vetulani o Holandii, niskim kraju http://www.nto.pl/apps/pbcs.dll/article?AID=/20110605/REPORTAZ01/762330357, nto.pl, 5 June 2011 (in Polish)

„If a due participation of office is a matter of right, how are vacancies to be obtained? Those by death are few; by resignation, none.“

—  Thomas Jefferson 3rd President of the United States of America 1743 - 1826

Letter to Elias Shipman and others of New Haven (12 July 1801). Often misquoted as, "few die and none resign".
1800s, First Presidential Administration (1801–1805)

„I started to shed the monstrous aesthetic affectation of my youth so as to make room for the monstrous philistine postures of middle age, but it was some years before I was bold enough to decline an invitation to "Hamlet" on the grounds that I knew who won.“

—  Quentin Crisp, livro The Naked Civil Servant

Fonte: The Naked Civil Servant (1968), Ch. 12

„In that year [1865] John Muir offered to buy from his brother … a sanctuary for the wildflowers that had gladdened his youth. His brother declined to part with the land, but he could not suppress the idea: 1865 still stands in Wisconsin history as the birth-year of mercy for things natural, wild, and free.“

—  Aldo Leopold, livro A Sand County Almanac

“February: Good Oak”, p. 15-16.
A Sand County Almanac, 1949, "January Thaw", "February: Good Oak" & "March: The Geese Return"

„The diseases which are hard to cure in neighborhoods… are catarrh, hoarseness, coughs, pleurisy, consumption, spitting of blood, and all others that are cured not by lowering the system but by building it up. They are hard to cure, first, because they are originally due to chills; secondly, because the patient's system being already exhausted by disease, the air there, which is in constant agitation owing to winds and therefore deteriorated, takes all the sap of life out of their diseased bodies and leaves them more meager every day. On the other hand, a mild, thick air, without drafts and not constantly blowing back and forth, builds up their frames by its unwavering steadiness, and so strengthens and restores people who are afflicted with these diseases.“

—  Vitruvius, livro De architectura

Fonte: De architectura (The Ten Books On Architecture) (~ 15BC), Book I, Chapter VI, Sec. 3

„Probably the profoundest difference between human and animal needs is made by one piece of human awareness, one fact that is not present to animals, because it is never learned in any direct experience: that is our foreknowledge of death. The fact that we ourselves must die is not a simple and isolated fact. It is built on a wide survey of facts that discloses the structure of history as a succession of overlapping brief lives, the patterns of youth and age, growth and decline; and above all that, it is built on the logical insight that one’s own life is a case in point. Only a creature that can think symbolically about life can conceive of its own death. Our knowledge of death is part of our knowledge of life.“

—  Susanne K. Langer American philosopher 1895 - 1985

Philosophical Sketches, Ayer (1979)

„You may call me an agnostic, but I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth.“

—  Albert Einstein German-born physicist and founder of the theory of relativity 1879 - 1955

Letter to Guy H. Raner Jr. (28 September 1949), from article by Michael R. Gilmore in Skeptic magazine, Vol. 5, No. 2 (1997)
1940s
Contexto: I have repeatedly said that in my opinion the idea of a personal God is a childlike one. You may call me an agnostic, but I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

„I do not wish to be a king; I am not anxious to be rich; I decline military command; I detest fornication; I am not impelled by an insatiable love of gain to go to sea; I do not contend for chaplets; I am free from a mad thirst for fame; I despise death; I am superior to every kind of disease; grief does not consume my soul.“

—  Tatian Syrian writer 120 - 180

Original: (la) Regnare nolo: ditescere non libet: prae turam recuso, scortationem odi: navigare ob insatiabilem avaritiam non cupio: de coronis consequendis non dimico: liber sum ab insana gloria cupiditate: mortem contemno: guovis morbi genere superior sum: maror animum non peredit.
Fonte: Address to the Greeks, Chapter XI, as translated by J. E. Ryland

„It is so naturally high in fat that it leads to obesity, the cause of all modern disease. Ayurveda actually lists milk as one of the five white poisons.“

—  Maneka Gandhi Indian politician and activist 1956

On drinking milk, as quoted in "Ayurveda actually lists milk as one of the five white poisons" http://www.rediff.com/news/2000/apr/11inter.htm, Rediff (12 April 2000)
1991-2000

„Deaths now outnumber births among white people in more than half the states in the country. Much of this is low birth rates and white men dying from substance abuse and suicide. Our life expectancy has declined for 3 years. We need to do much more.“

—  Andrew Yang American entrepreneur 1975

15 February 2019 https://twitter.com/andrewyangvfa/status/1096442292527874048

„Death: frightening and inevitable./ It is necessary to give rise to better offspring./ It is necessary to give way to a better life-style/ It is necessary due to the law of nature.“

—  Kuruvilla Pandikattu Indian philosopher 1957

Death: Live It! p. 20.
Death: Live It! (2005)

„Wherever we look the dreadful disintegration of the bridges of life, the capillaries and the bodies they have created, is evident, which has been caused by the mechanical and mindless work of man, who has torn away the soul from the Earth's blood - water. The more the engineer endeavors to channel water, of whose spirit and nature he is today still ignorant, by the shortest and straightest route to the sea, the more the flow of water weighs into the bends, the longer its path and the worse the water will become. The spreading of the most terrible disease of all, of cancer, is the necessary consequence of such unnatural regulatory works. These mistaken activities - our work - must legitimately lead to increasingly widespread unemployment, because our present methods of working, which have a purely mechanical basis, are already destroying not only all of wise Nature's formative processes, but first and foremost the growth of the vegetation itself, which is being destroyed even as it grows. The drying up of mountain springs, the change in the whole pattern of motion of the groundwater, and the disturbance in the blood circulation of the organism - Earth - is the direct result of modern forestry practices. The pulse-beat of the Earth was factually arrested by the modern timber production industry. Every economic death of a people is always preceded by the death of its forests. The forest is the habitat of water and as such the habitat of life processes too, whose quality declines as the organic development of the forest is disturbed. Ultimately, due to a law which functions with awesome constancy, it will slowly but surely come around to our turn. Our accustomed way of thinking in many ways, and perhaps even without exception, is opposed to the true workings of Nature. Our work is the embodiment of our will. The spiritual manifestation of this work is its effect. When such work is carried out correctly, it brings happiness, but when carried out incorrectly, it assuredly brings misery.“

—  Viktor Schauberger austrian philosopher and inventor 1885 - 1958