“Liberalism and its Discontents,” pp. 24-25.
Outside Ethics (2005)
Quotes about philosophy
page 6

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Appendix A: The Essays in their Systematic Connexion, p.383

Emphasizing his views on philosophy as something abstract and separate from normal life to Isaiah Berlin, in the early 1930s, as quoted in A.J. Ayer: A Life (1999) by Ben Rogers, p. 2.

Time and Individuality (1940)

"The Case for Xanthippe" in The Crane Bag (1969).
General sources

Ian Hacking (1975), Why Does Language Matter to Philosophy?, p. 7.
Source: Liberty Before Liberalism (1998), pp. 116-117

[The fact appears to be that] “After eight centuries of galling subjection to conquerors totally ignorant of the classical language of the Hindus; after every capital city had been repeatedly stormed and sacked by barbarous, bigoted, and exasperated foes; it is too much to expect that the literature of the country should not have sustained, in common with other interests, irretrievable losses.”
James Tod, Annals and Antiquities of Rajasthan, Routledge and Kegan Paul (London,l829,1957), 2 vols., I quoted from Lal, K. S. (1992). The legacy of Muslim rule in India. New Delhi: Aditya Prakashan. Chapter 3
Jo Grimond, The Future of Liberalism (October, 1980).
"Malala Yousafzai and Kailash Satyarthi Are Awarded Nobel Peace Prize" by Alan Cowell and Declan Walsh, in The New York Times (10 October 2014)

Excellence: Can We Be Equal and Excellent Too? (1961).

Upon Nothing, ll. 28–33.
Other

“Philosophy triumphs easily over past and future evils; but present evils triumph over it.”
La philosophie triomphe aisément des maux passés et des maux à venir. Mais les maux présents triomphent d'elle.
Maxim 22. Compare: "This same philosophy is a good horse in the stable, but an arrant jade on a journey", Oliver Goldsmith, The Good-Natured Man, Act i.
Reflections; or Sentences and Moral Maxims (1665–1678)
Introduction
Thomism: The Philosophy of Thomas Aquinas

The Procedural Republic and the Unencumbered Self, 1984
Central Philosophy of Jainism (1981), p. 2

Robert Fludd, cited in: Arthur Edward Waite (1887). The Real History of the Rosicrucians Founded on Their Own Manifestoes https://archive.org/stream/realhistoryofros00waituoft#page/290/mode/1up. p. 290
Waite commented: "Like others of his school, Fludd insists on the uncertainty of a posteriori and experimental methods, to which he unhesitatingly attributes all the errors of the natural sciences..."

“Philosophy is empty if it isn't based on science. Science discovers, philosophy interprets.”
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 98

System of Transcendental Philosophy (1800)

“The Contradiction in Objectivism,” 1968

Bei den Ausdrücken, „Seine Philosophie”, „Meine Philosophie”, erinnert man sich immer an die Worte im Nathan: „Wem eignet Gott? Was ist das für ein Gott, der einem Menschen eignet?”
Lucinde and the Fragments, P. Firchow, trans. (1991) § 99, reference is to Lessing, Nathan der Weise

Mechanism in thought and morals https://books.google.se/books?id=c5rOGqwLGaEC&lpg=PA47 : an address delivered before the Phi Beta Kappa Society of Harvard University, June 29, 1870
Mechanism in thought and morals (1871)
That was the first time I had thought seriously about being an anthropologist, and then I began to think about it and I went to Harvard and so on.
"Clifford Geertz on Ethnography and Social Construction", 1991
Source: Christ and Culture (1951), p. 69

1982 interview with FBI Agent Mike McPheters, quoted in — [Mike, McPheters, Agent Bishop, 145, 1599553171, 2009, Cedar Fort]

And she said, “Art is for rich people and women.”
Lawrence Weiner in: Thessaly La Force, " STUDIO VISIT Lawrence Weiner http://www.theparisreview.org/blog/2011/02/14/lawrence-weiner/," at theparisreview.org/blog, February 14, 2011.

Source: The Tales of Alvin Maker, The Crystal City (2003), Chapter 17 “Foundation” (p. 334).

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Harmony of Determinism and Freedom, p.330-1

Memorial dedication (1902)

Source: Essays in tektology, 1980, p. 195, as cited in: Arran Gare, " Aleksandr Bogdanov and systems theory http://aaltowebstudio.cloudapp.net/tangentialpoints/wp-content/uploads/sites/3/2014/05/Arren-Gare-2000-Aleksandr-Bogdanov-and-Systems-Theory.pdf." Democracy & Nature 6.3 (2000): 341-359.

page 9
Sexual Behavior in the Human Female (1953)

Source: Margaret Sanger: An Autobiography (1938), Chapter 30, "Now Is the Time for Converse", pp. 374-375.

"Into the Cool: Energy Flow, Thermodynamics and Life", Eric D. Schneider and Dorion Sagan, 2005, p. 323
Attributed
Interview with CNN's chief medicine reporter Sanjay Gupta (April 2015) https://www.youtube.com/watch?v=hGQTpxjbwaM.

Source: L’Expérience Intérieure (1943), p. 9

"Chris Abani muses on humanity," http://dotsub.com/view/00ce011c-4463-4edc-a9e9-a2768079bc07 dotSUB (2008-11-13)
TED Africa Conference (2008)
Philosophy : the basics (Fifth Edition, 2013), Introduction

Letter to the children of Troy, Michigan on the opening of its Public Library (1971), in Why Libraries Matter: Letters to the Children of Troy, Michigan (From 1971) http://www.mentalfloss.com/blogs/archives/132316, by Lucas Reilly, Mental Floss (3 July 2012)
the congressman feathering his own nest
Source: "The theory of economic regulation," 1971, p. 3

Source: The Natural History of the Soul (1745), Ch. VI Concerning the Sensitive Faculty of Matter

“Adolf Hitler took Darwin's evolutionary philosophy to its logical conclusions.”
The Origin of Species: 150th Anniversary Edition (2009)

How far from the truth!
Source: Essential Ohsawa - From Food to Health, Happiness to Freedom - Understanding the Basics of Macrobiotics (1994), p. 82

Quoted by Eric Thurnauer for Stuff Magazine (November/December 1998)

Source: Introduction to Systems Philosophy (1972), p. 120.

Source: Kritik der zynischen Vernunft [Critique of Cynical Reason] (1983), p. xxvii

Source: The Priestly Kingdom (1984), p. 99

Source: The Philosopher's Apprentice (2008), Chapter 1 (p. 8)

Myron Tribus (2000), cited in: Fisher, N. I., and V. N. Nair. "Quality management and quality practice: Perspectives on their history and their future." Applied Stochastic Models in Business and Industry 25.1 (2009): 1-28.

Time and Individuality (1940)
Fuggite i libri; questi
Son la vergogna dell’ umana gente,
Son gli assassin! della vita umana.
Credete a me : la vera
Filosofia è quella d’ingrassare.
Socrate Immaginario, Act I., Sc. XIII. — (Tammaro.). Translation reported in Harbottle's Dictionary of quotations French and Italian (1904), p. 303.

1960s, Review of Teilhard de Chardin's "The Phenomenon of Man", 1961
Source: Organizational cybernetics and human values (1969), p. 1

“The old Romans had a custom which survived even into my lifetime. They would add to the opening words of a letter: "If you are well, it is well; I also am well." Persons like ourselves would do well to say. "If you are studying philosophy, it is well." For this is just what "being well" means. Without philosophy the mind is sickly.”
Mos antiquis fuit, usque ad meam servatus aetatem, primis epistulae verbis adicere 'si vales bene est, ego valeo'. Recte nos dicimus 'si philosopharis, bene est'. Valere enim hoc demum est. Sine hoc aeger est animus.
Mos antiquis fuit, usque ad meam servatus aetatem, primis epistulae verbis adicere 'si vales bene est, ego valeo'. Recte nos dicimus 'si philosopharis, bene est'.
Valere enim hoc demum est. Sine hoc aeger est animus.
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XV

“Philosophy, is the talk on a cereal box.
Religion, is a smile on a dog.”
"What I Am"
Shooting Rubberbands at the Stars (1988)
Source: Philosophy and Real Politics (2008), p. 54.
Source: “What’s wrong with Libertarianism”, p. 445

The Politically Incorrect Guide to Islam, Chapter 1, page 3 https://books.google.com.br/books?id=_7RD2jwMU2wC&printsec=frontcover&hl=pt-BR#v=onepage&q&f=false

The Tragic Sense of Life (1913), Conclusion : Don Quixote in the Contemporary European Tragi-Comedy

Source: In Praise of Philosophy (1963), p. 57

John Maynard Keynes: 1883-1946: Economist, Philosopher, Statesman (2003), Introduction

1840s, On the Concept of Irony with Continual Reference to Socrates (1841)

Weggefährten - Erinnerungen und Reflexionen, Siedler-Verlag Berlin 1996, p. 58, ISBN 9783442755158, ISBN 978-3442755158

Sir Cyril Norman Hinshelwood. "Presidential Address to Classical Association," 1959; Partly quotes in: Chemists through the years, part 1, The Royal Society of Chemistry, 1994.

Source: Fugitive Essays: Selected Writings of Frank Chodorov (1980), p. 268

Source: The Philosopher's Apprentice (2008), Chapter 9 (p. 215)

" An Interview with Joseph Nechvatal http://versejunkies.com/?p=6110#," at versejunkies.com. Posted On 10 August 2013.

Source: "The Latest Attack on Metaphysics" (1937), p. 149.

The Elks Magazine (August 1956).