Source: Anam Cara: A Book of Celtic Wisdom
Quotes about intensity
page 3

“Eddie was intensely dedicated too. Adrian sometimes called him mini-Dimitri”

“nothing which we are to perceive in this world equals
the power of your intense fragility”

Source: Girl With Curious Hair

Source: The Art Spirit: Notes, Articles, Fragments of Letters and Talks to Students, Bearing on the Concept and Technique of Picture Making, the Study of Art

Source: A Path with Heart: A Guide Through the Perils and Promises of Spiritual Life

“An awareness of death encourages us to live more intensely.”

Source: I am an Emotional Creature

“Her glare was so intense that you completely forgot she was wearing pink.”
Source: Half-Moon Investigations

Letter to G. and F. Keats (December 21, 1817)
Letters (1817–1820)
Source: Secrets of a Summer Night

Essays on Woman (1996), Spirituality of the Christian Woman (1932)

“.. to have all colors deeper, more intense; |I| get quite angry at this lightness..”
quote from a letter to her husband Otto Modersohn from Paris, 29 February, 1900; as quoted in Expressionism, a German intuition, 1905-1920, Neugroschel, Joachim; Vogt, Paul; Keller, Horst; Urban, Martin; Dube, Wolf Dieter; (transl. Joachim Neugroschel); publisher: Solomon R. Guggenheim Foundation, New York, 1980, p. 31
as early as 1900 Paula Modersohn-Becker had written from Paris that she longed for stronger and deeper colors in her own work
1900 - 1905
"November 5th — Light," page 206
The Forest Unseen: A Year's Watch in Nature http://theforestunseen.com/ (2012)

1979
"A Note on Poetry," preface to The Rage for the Lost Penny: Five Young American Poets (New Directions, 1940) [p. 49]
Kipling, Auden & Co: Essays and Reviews 1935-1964 (1980)
Michael A. Jackson in: K. De Grave (ed.) Formalism & Intuition in Software Development; A conversation with Michael A. Jackson conducted by Edgar G. Daylight and Bas van Vlijmen. 2015

On the secession movement in the South (1860). Reported in Allan Nevins, The Emergence of Lincoln (1950), p. 387.

Interview by Brendan Maher http://www.gottfried-helnwein-interview.com/index.html, Start, Ireland, November 24, 2004
Harsh Narain, Myths of Composite Culture and Equality of Religions (1990)

Source: 1969 - 1980, In: "Ellsworth Kelly: Works on Paper," 1987, p. unknown : 'Notes from 1969'

[as quoted by Joseph F. Mulligan, American journal of physics, Volume 66 (9), American Association of Physics Teachers, American Institute of Physics, 1998, 797]

Source: Social Theoryː Its Situation and Its Task (1987), p. 205
"How can you be Christian without caring for the poor?" (2017)
(Manuscript, 1914); as quoted in Futurism, ed. Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 148
Futurist Manifesto of Men's clothing,' 1913/1914
Review of After the Fall, by Arthur Miller, at the ANTA Washington Square Theatre, New York; Blues for Mister Charlie, by James Baldwin at the ANTA Theatre, New York (1962), p. 143
Tynan Right and Left (1967)
Walter W. Powell and Kaisa Snellman. "The knowledge economy." Annu. Rev. Sociol. 30 (2004): 199-220.

“The atoms become like a moth, seeking out the region of higher laser intensity.”
As quoted by James Gleick in Lasers slow atom for scrutiny, The New York Times, July 13, 1986: Explaining how atoms are cooled.
Wynford Dewhurst, 'What is Impressionism?' in Contemporary Review. vol. XCIX, 1911, p. 300.

Vol. 1: 'My beautiful One, My Unique!', pp. 130-140
1895 - 1905, Lettres à un Inconnu, 1901 – 1905; Museo Communale, Ascona

Quote from his letter to Alfred Barr, Jr., 16 July, 1944; as cited in Vivian Endicott Barnett, et al., 'Kandinsky', exh. cat. [New York: Solomon R. Guggenheim Museum, 2009], p. 70
1930 - 1944
Rudolf Carnap, as quoted in The Philosophy of Rudolf Carnap (1963) by Paul Arthur Schilpp, p. 25, and in Ludwig Wittgenstein : The Duty of Genius (1991) by Ray Monk, p. 244

"On the Disadvantages of Intellectual Superiority"
Table Talk: Essays On Men And Manners http://www.blupete.com/Literature/Essays/TableHazIV.htm (1821-1822)

Quoted in L. White Busby, Uncle Joe Cannon: The Story of a Pioneer American (1937), p. 260

Speech http://hansard.millbanksystems.com/lords/1897/mar/19/speech-by-lord-kimberley-at-norwich in the House of Lords (19 March 1897)
1890s
Source: SCUM MANIFESTO (1967), p. 11.

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 422

1960s, I am Prepared to Die (1964)

Source: Lectures on The Industrial Revolution in England (1884), p. 134

Speech in the Albert Hall, London (12 May 1938), quoted in The Times (13 May 1938), p. 11.
Prime Minister

Source: An imitation of life (1950), p. 42.

David Wild, Rolling Stone "X-Files Undercover" http://www.rollingstone.com/tv/features/x-files-undercover-19960516 (May 16, 1996)
1990s

Quote in Cezanne's letter to his son Paul, a few months before his death; as quoted in The Private Lives of the Impressionists Sue Roe; Harper Collins Publishers, New York, 2006, p. 268
Quotes of Paul Cezanne, after 1900
The Morality of Poetry
Primitivism and Decadence : A Study of American Experimental Poetry (1937)
"How it came about?" from Anarchism Is Not Enough (London: Jonathan Cape, 1928)

1990s, Moab is My Washpot (autobiography, 1997)

On conductor George Enescu, in "Music in Aspic," Harper's Magazine (October 1939) and A Smattering of Ignorance (1940); as quoted in "Lightning Wit Plays On American Musical Scene; Oscar Levant Answers Unspoken Request for 'Information, Please' With Uncensored Comments on Exalted Persons" by Ray C. B. Brown, in The Washington Post (January 14, 1940), p. E4

“This industry will make you lose intensity”
"The 6th Sense" (Track 9)
Albums, Like Water for Chocolate (2000)

Sarat Chandra Chatterjee cited by H.V. Sheshadri, quoted from S.R. Goel, Muslim Separatism - Causes and Consequences Ch.12
The Tragic Story of Partition (1982)

Source: Seth, Dreams & Projections of Consciousness, (1986), p. 130, quoting from Seth Session 20

Bessen, James, and Eric Maskin. " Sequential innovation, patents, and imitation http://ec.europa.eu/internal_market/indprop/docs/comp/replies/appendix1_en.pdf." The RAND Journal of Economics, 40.4 (2009): p. 611.
Source: The Romantic Generation (1995), Ch. 8 : Liszt: On Creation as Performance

Interview with Newsweek, Nov. 2005, pub. 23 Feb. 2006 http://www.msnbc.msn.com/id/11522274/
1951; as cited in 'Robert Motherwell, American Painter and Printmaker' https://www.theartstory.org/artist-motherwell-robert-life-and-legacy.htm#writings_and_ideas_header, on 'Artstory'
1950s

quote from Mondrian's sketchbook II, 1912/13; as cited in Mondrian, - The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 78
1910's

"A New Method of Obtaining Very Great Moving Powers at Small Cost" (1690)

Conversations with Žižek by Slavoj Žižek and Glyn Daly (Cambridge: Polity Press, 2004), p. 42

Festubert, 1916 https://www.poetryfoundation.org/poems/57255/festubert-1916 (1921)

May 29, 1940; Vol. 1, p. 73.
Diary (1939 - 1945)
1920s
Source: the article 'i ein Manifest' (or 'i-manifest'), Kurt Schwitters, in Merz 2. 1923; as quoted in Kurt Schwitters Merzbau: The Cathedral of Erotic Misery, by Elizabeth Burns Gamard, Princeton Architectural Press, New York, 2000, p. 116

On "The Troubles" in Ireland.
Judging Dev (2007)
Source: Organizational cybernetics and human values (1969), p. 1

Source: The Case of Mr. Richard Arkwright and Co., 1781, p. 23