Kennedy did not turn around.
“It takes a great deal of faith in mankind to keep from directing it the way we think it should go,” he said at last.
Source: They'd Rather Be Right (1954), p. 92.
Quotes about mankind
page 18

Mondrian tried to convince the Dutch publisher Stols to publish his new manuscript 'L'art et la vie'
In a letter to A. M. Stols, 26 March 1932; as quoted in Mondrian, - The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 222
1930's

Shri Shastriji about Haidakhan Babaji, cited in: The Teachings of Babaji, 10 April 1983.

Peter Gorsen, about the depiction of wounded children in Helnwein's work, Albertina Museum catalogue, Gottfried Helnwein solo-exhibition, 1985, www.gottfried-helnwein-child.com http:////www.gottfried-helnwein-child.com/index.html

The line of differentiation between the masses and the Remnant is set invariably by quality, not by circumstance. The Remnant are those who by force of intellect are able to apprehend these principles, and by force of character are able, at least measurably, to cleave to them. The masses are those who are unable to do either.
Source: Isaiah's Job (1936), II

Declaration of Sentiments, Boston Peace Conference http://fair-use.org/the-liberator/1838/09/28/declaration-of-sentiments-adopted-by-the-peace-convention#p3 (28 September 1838)

Modern version: No man is an island, entire of itself; every man is a piece of the continent, a part of the main; if a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as if a manor of thy friends or of thine own were; any man's death diminishes me, because I am involved in mankind; and therefore never send to know for whom the bell tolls; it tolls for thee.
Meditation 17. This was the source for the title of Ernest Hemingway's novel.
Devotions Upon Emergent Occasions (1624)

Source: Reason: The Only Oracle Of Man (1784), Ch. III Section III - Human Liberty, Agency and Accountability, cannot be attended with Eternal Consequences, either Good or Evil

Source: Reason: The Only Oracle Of Man (1784), Ch. XIII Section II - Of The Importance of the Exercise of Reason, and Practice of Morality, in order to the Happiness of Mankind

Attributed in "The Final Resolution", in Jewish World Periodical (1908), p. 189
Disputed

Source: Moral Inquiries on the Situation of Man and of Brutes (1824), Chapter 2, p. 53
Source: Ferret: The Reluctant King (2020), p. 139

These Arabs believe their religion, and try to live by it! No Christians, since the early ages, or only perhaps the English Puritans in modern times, have ever stood by their Faith as the Moslem do by theirs, — believing it wholly, fronting Time with it, and Eternity with it.
1840s, Heroes and Hero-Worship (1840), The Hero as Prophet

1900s, God Does Not Exist (1904)

Without Marx or Jesus; the new American Revolution has begun (1971) quoted in The Aquarian Conspiracy, by Marilyn Ferguson, Chapter 5 (1980)
1970s

Napoleon the Little (1852), Conclusion, Part Second, I
Napoleon the Little (1852)

Napoleon the Little (1852), Book V, V
Napoleon the Little (1852)

Conclusion, Part Second, II
Napoleon the Little (1852)

The Aquarian Conspiracy (1980), Chapter Five, The American Matrix for Transformation

"A Pledge of Allegiance" - speech for "I Am an American Day" Central Park, New York, New York. (20 May 1945) Hand credited H. G. Wells with inspiring some of the ideas expressed in this speech.
Extra-judicial writings

The Art of Living: Living within the Laws of Life (2006)

Diwan Ibn Hajar al-Asqalani, quoted in Selections from the Fath al-Bari, p.4
Poetry

The Reappearance of the Christ and the Masters of Wisdom (1980)

Source: The Philosophy of Anarchism (1940), P. 11-12
“Since the very beginning, I have had this dream of living and working for the dignity of mankind.”
Source: Interview http://www.globalblue.com/destinations/italy/milan/exclusive-interview-with-brunello-cucinelli Global Blue, Ginger Rose Clark, 3 October 2018

From a letter to Hermann Huth, Vice-President of the German Vegetarian Federation, 27 December 1930. Supposedly published in German magazine Vegetarische Warte, which existed from 1882 to 1935. Einstein Archive 46-756. Quoted in The Ultimate Quotable Einstein by Alice Calaprice (2011), [//books.google.it/books?id=G_iziBAPXtEC&pg=PA453 p. 453]. ISBN 978-0-691-13817-6
1930s

And how shall the “still small voice” make itself heard in a soul entirely occupied with its own privileged tenants? What room is there left for the needs of Humanity en bloc...? He who would profit by the wisdom of the universal mind, has to reach it through the whole of Humanity without distinction of race, complexion, religion, or social status. It is altruism, not ego-ism even in its most legal and noble conception, that can lead the unit to merge its little Self in the Universal Selves. It is... to this work that the true disciple of true Occultism has to devote himself if he would obtain... divine Wisdom and Knowledge. p. 62
Practical Occultism (1888)

Only descendants of Adam can be saved. God’s Son remains the “Godman” as our Savior. In fact, the Bible makes it clear that we see the Father through the Son (and we see the Son through His Word). To suggest that aliens could respond to the gospel is just totally wrong. An understanding of the gospel makes it clear that salvation through Christ is only for the Adamic race—human beings who are all descendants of Adam.
"We'll find a new Earth within 20 years" http://blogs.answersingenesis.org/blogs/ken-ham/2014/07/20/well-find-a-new-earth-within-20-years/, Around the World with Ken Ham (July 20, 2014)
2010s, Around the World with Ken Ham

‘To the Labourers of England, on their duties and their rights’, Political Register (29 January 1831), p. 288
1830s

The civilising process needn't be species-specific but instead extend to free-living dwellers in tomorrow's wildlife parks. Every cubic metre of the biosphere will soon be computationally accessible to surveillance, micro-management and control. Fertility regulation via immunocontraception can replace Darwinian ecosystems governed by starvation and predation. Any species of obligate carnivore we choose to preserve can be genetically and behaviourally tweaked into harmlessness. Asphyxiation, disembowelling, and agonies of being eaten alive can pass into the dustbin of history.
" High-tech Jainism https://www.hedweb.com/transhumanism/neojainism.html", The World Transformed, Jul. 2014

Kant, Immanuel (1996), page 185
Anthropology from a Pragmatic Point of View (1798)

Quotes by Herder about India. Quoted from Londhe, S. (2008). A tribute to Hinduism: Thoughts and wisdom spanning continents and time about India and her culture. New Delhi: Pragun Publication. (quoting Ghosh, Pranebendranath Johann Gottfried Herder's Image of India (1900)p334, Singhal, Damodar P India and world Civilization Rupa and Co Calcutta 1993 p. 231)
Introduction (p. XII–XIII)
Feet of Clay; Saints, Sinners, and Madmen: A Study of Gurus (1996, 1997)

"What I Believe" in The Forum 84 (September 1930), p. 139; some of these expressions were also used separately in other Mencken essays.
1930s
The Masters and the Path of Occultism (1939)
[The Wheat Plant: A Monograph, 1921, London, Duckworth & Co, 3, https://babel.hathitrust.org/cgi/pt?id=uc2.ark:/13960/t56d5r310&view=1up&seq=21]

[Bakerian lecture.―On the statistical and thermodynamical relations of radiant energy, Proceedings of the Royal Society of London. Series A, 83, 560, 1909, 82–95, 10.1098/rspa.1909.0080] (p. 82)

"The New Priests" (1901)

"We, the Androgynes of the World" (July 7th, 1950)
Radically Gay: Gay Liberation in the words of its Founder (1996)

Source: Esoteric Christianity: Or, The Lesser Mysteries (1914), Chapter IV. The Historical Christ
Maharishi Mahesh Yogi, in CNN Larry King Weekend:Interview With Maharishi Mahesh Yogi http://transcripts.cnn.com/TRANSCRIPTS/0205/12/lklw.00.html, (2002)

As quoted in "The best quotes from Ralph Klein’s colourful public life" http://www.theglobeandmail.com/news/national/the-best-quotes-from-ralph-kleins-colourful-public-life/article10577310/, The Globe and Mail
p. 92
Dorothy Thompson’s Political Guide: A Study of American Liberalism and its Relationship to Modern Totalitarian States (1938)

Dorothy Thompson’s Political Guide: A Study of American Liberalism and its Relationship to Modern Totalitarian States (1938)
Source: A Study of American Liberalism and its Relationship to Modern Totalitarian States (1938)
p. 27

Innkeeper's wife
Source: A Child is Born (1942)
As quoted in "Daniel Quinn: Another Interpretation of the ‘Meaning of Life" by Nicolae Tanase, at Excellence Reporter (28 March 2016) https://excellencereporter.com/2016/03/28/daniel-quinn-another-interpretation-of-the-meaning-of-life/

"The Speedy Extinction of Evil and Misery", part V, p. 83
Essays and Phantasies (1881)

"The Speedy Extinction of Evil and Misery", part II, p. 60
Essays and Phantasies (1881)

Bishop Stephen Robson’s homily https://www.dunkelddiocese.co.uk/chrism-mass-st-andrews-cathedral-2019/ (17 April 2019)

Address https://apnews.com/article/e5458697cf06bbb518a9ffafffd650e5 to the U.N. Security Council (31 January 1992)
1990s

Letter to Thomas Moore (22 June 1821).

Source: A Discourse on the Love of Our Country (1789), p. 13

Some Characteristics of the American Ethical Movement (1925)

“It is the natural fault of young people to think too well of mankind [...].”
Book I, ch. II, The Passage from Madeira to the Cape Verd Islands, and from thence to the Cape of Good Hope.
A Voyage Round the World (1777)

Source: A Discourse on the Love of Our Country (1789), pp. 50–51

“The accumulation of nuclear arms has to be constrained if mankind is not to destroy itself.”
Press conference held on 13 February, 1974

“They only are loyal to this college who departing bear their added riches in trust for mankind.”
Pomona College Gates, south side [citation needed]
Bishop Provost’s Chrism Mass Homily for 2021 http://www.lcdiocese.org/the-diocese/our-bishop/homilies/3150-bishop-provost-s-chrism-mass-homily-for-2021 (31 March 2021)

The Reappearance of the Christ and the Masters of Wisdom (1980)

The Reappearance of the Christ and the Masters of Wisdom (1980)

Post-war years (1945–1955)
Source: The Sinews of Peace https://www.nato.int/docu/speech/1946/s460305a_e.htm speech, Westminster College, Fulton, Missouri, March 5, 1946.

Source: 14 December 1941, quoted in Hitler's Table Talk, 1941–1944

Source: Humanity Comes of Age, A study of Individual and World Fulfillment (1950), Chapter II Planning a Model World

Source: Count Magnus Fredrik Ferdinand Bjornstjerna in: The Theogony of the Hindoos with Their System of Philosophy and Cosmogony by Count M. Björnstjerna https://books.google.co.in/books?id=mHNK92IkdUkC&pg=PA85, Murray, 1844 , p. 85.

Source: 1860s, The Massacre Of St. Bartholomew (1869)

Source: Life Beyond Measure (2008), twenty-third letter — The World I Leave You, p. 273

1920s, The Ordeal of This Generation: The War, the League and the Future (1929)
Source: "The Civilization of the Nineteenth Century: Its Greatness and the Flaw which led to its Collapse", p. 51

Source: "The Global Nature of Science, Technology and Innovation: An interview with Ambassador Qin Gang, China's Ambassador to the U.S." in Science & Diplomacy https://www.sciencediplomacy.org/conversation/2021/global-nature-science-technology-and-innovation-interview-ambassador-qin-gang (17 December 2021)

"Ambassador Qin: China, U.S. should work together to promote interest of mankind" in CGTN https://newsus.cgtn.com/news/2022-04-12/CGTN-exclusive-interview-with-Ambassador-Qin-Gang-199PKD3NXSU/index.html (12 April 2022)

1930s, Wisehart interview (1930)
Argentinean bishop: Rosary helps Catholics face difficulties of life https://www.catholicnewsagency.com/news/21189/argentinean-bishop-rosary-helps-catholics-face-difficulties-of-life (18 October 2010)

“Now the mass of mankind are plainly... choosing a life like that of brute animals...”
The Ethics Of Aristotle (Vol. I), Bk. 1, Chapter III

Speech at the 55th session of the United Nations General Assembly (excerpts) (2000)

Speech at the 50th session of the United Nations General Assembly (excerpts) (1995)

Speech at the 49th session of the United Nations General Assembly (excerpts) (1994)

“Today the dreams of the best sons of mankind have come true. The assault on space has begun.”
As quoted in 1957, Red Star in Orbit by James Oberg (1981)

“The spiritual dignity of this new humane life for mankind is the Spirit of Man himself sacrosanct.”
A Testament (1957)