Bobby Fischer (1943–2008) American chess prodigy, chess player, and chess writer
1970s, BOBBY FISCHER SPEAKS OUT! (1977)
Bobby Fischer (1943–2008) American chess prodigy, chess player, and chess writer
1970s, BOBBY FISCHER SPEAKS OUT! (1977)
Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist
Answer to the question: "Back in 1965 when you published your initial paper on Fuzzy Logic, how did you think it would be accepted?"
1990s, Interview with Lotfi Zadeh, Creator of Fuzzy Logic (1994)
“Logic only gives man what he needs. Magic gives him what he wants.”
Tom Robbins book Another Roadside Attraction
Another Roadside Attraction (1971)
Ray Kurzweil (1948) Author, scientist, inventor, and futurist
"The Singularity," The New Humanists: Science at the Edge (2003)
Philippa Foot (1920–2010) British philosopher
"Moral Beliefs"
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
1920s, What I Believe (1925)
“If you use a trick in logic, whom can you be tricking other than yourself?”
Ludwig Wittgenstein (1889–1951) Austrian-British philosopher
Source: Culture and Value (1980), p. 24e
Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist
Zadeh (1995) in Foreword of George J. Klir Fuzzy sets and fuzzy logic: theory and applications.
1990s
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Preface (1957)
1920s, Why I Am Not a Christian (1927)
Ludwig Wittgenstein (1889–1951) Austrian-British philosopher
Philosophical Remarks (1930), Part I (1)
1930s-1951
Jawaharlal Nehru (1889–1964) Indian lawyer, statesman, and writer, first Prime Minister of India
Autobiography (1936; 1949; 1958)
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
"On Denoting", Mind, Vol. 14, No. 56 (October 1905), pp. 479–493; as reprinted in Logic and Knowledge: Essays, 1901–1950, (1956)
1900s
Carl Schmitt (1888–1985) German jurist, political theorist and professor of law
"The Tyranny of Values" (1967)
Antonin Artaud (1896–1948) French-Occitanian poet, playwright, actor and theatre director
Letter to the Chancellors of the European Universities. Collected Works, vol. 1, pt. 2 (1956, trans. 1968).
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Principles of Mathematics (1903), Ch. I: Definition of Pure Mathematics, p. 3
1900s
Gottlob Frege (1848–1925) mathematician, logician, philosopher
Gottlob Frege in: Dagobert David Runes (1962). Readings in epistemology, theory of knowledge and dialectics. p. 334
Lewis Carroll book What the Tortoise Said to Achilles
"I see," said Achilles; and there was a touch of sadness in his tone.
"What the Tortoise Said to Achilles", Mind, n.s., 4 (1895), pp. 278–80
Ronald Reagan (1911–2004) American politician, 40th president of the United States (in office from 1981 to 1989)
1980s, First term of office (1981–1985), Address on the Strategic Defense Initiative (1983)
Frank P. Ramsey (1903–1930) British mathematician, philosopher
Preface
The Foundations of Mathematics (1925)
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
1910s, The Philosophy of Logical Atomism (1918)
Joseph Stalin (1879–1953) General secretary of the Communist Party of the Soviet Union
Anarchism or Socialism (1906)
Mahmoud Ahmadinejad (1956) 6th President of the Islamic Republic of Iran
Columbia University speech, 24 September 2007
[24 September 2007, http://www.azstarnet.com/sn/hourlyupdate/202820.php, "Iran's president at Columbia University - a transcript", azstarnet.com, 2007-09-25]
2007
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Source: 1910s, Introduction to Mathematical Philosophy (1919), Ch. 18: Mathematics and Logic
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Quoted in Hawes The Logic of Contemporary English Realism (1923), p. 110;Most people would die sooner than think – in fact they do so. cf. Ockham's maxim: entia non sunt multiplicanda praeter necessitatem.
1920s
Abraham Lincoln (1809–1865) 16th President of the United States
1850s, The House Divided speech (1858)
Roger Fry (1866–1934) English artist and art critic
Lecture to Fabian Soiety 1917 Art and Life from Vision and design by Roger Fry , Forgotten Books , 2012
Art Quotes
Karl E. Weick (1936) Organisational psychologist
Source: 1970s, "Educational organizations as loosely coupled systems," 1976, p. 17
Gabriel Marcel (1889–1973) French philosopher, playwright, music critic and leading Christian existentialist
Source: Man Against Mass Society (1952), p. 143
Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist
Zadeh (1975) "Fuzzy logic and approximate reasoning". Synthese 30: p. 407
1970s
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Preface (1957)
1920s, Why I Am Not a Christian (1927)
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Source: 1920s, Review of The Meaning of Meaning (1926), p. 114
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Source: 1910s, Our Knowledge of the External World (1914), p. 9
Barack Obama (1961) 44th President of the United States of America
Speaking during a discussion at "Kirchentag," a multi-day meeting sponsored by the Protestant church in Germany in Berlin, Germany on May 25, 2017. Source: Dovere, Edward-Isaac (25 May 2017). " Obama in Berlin: 'We can’t hide behind a wall' http://archive.is/PZKE4". Politico. Archived from the original http://www.politico.com/story/2017/05/25/obama-in-berlin-angela-merkel-238806 on 2 June 2017. Retrieved 2 June2017. <br class="br">2017
Ludwig Wittgenstein (1889–1951) Austrian-British philosopher
Journal entry (24 July 1916), p. 77e
1910s, Notebooks 1914-1916
Václav Havel (1936–2011) playwright, essayist, poet, dissident and 1st President of the Czech Republic
The Need for Transcendence in the Postmodern World (1994)
François Viète (1540–1603) French mathematician
Source: In artem analyticem Isagoge (1591), Ch. 1 as quoted by Jacob Klein, Greek Mathematical Thought and the Origin of Algebra (1934-1936) Appendix.
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
1910s, The Philosophy of Logical Atomism (1918)
Antonin Scalia (1936–2016) former Associate Justice of the Supreme Court of the United States
Ohio v. Akron Center for Reproductive Health, (1990, concurring), 497 U.S. 502 http://caselaw.lp.findlaw.com/cgi-bin/getcase.pl?friend=oyez&navby=case&court=us&vol=497&invol=502#520 ; decided June 25,1990). <br class="br">1990s
Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist
Response to the question: "How did you think Fuzzy Logic would be used at first?"
1990s, Interview with Lotfi Zadeh, Creator of Fuzzy Logic (1994)
Rudolf Carnap (1891–1970) German philosopher
Source: Carnap’s intellectual biography (1963), p. 25 as cited in: M. J. Cresswell (2010) " Carnap's logic http://apacentral.org/necessity/Cresswell_Carnap.pdf"
Bertrand Russell book Religion and Science
Religion and Science (1935), Ch. I: Ground of Conflict
1930s
Lotfi A. Zadeh (1921–2017) Electrical engineer and computer scientist
Lotfi Asker Zadeh, George Jiri Klir, Bo Yuan (1996) Fuzzy Sets, Fuzzy Logic, and Fuzzy Systems: Selected Papers. p. 238
1990s
Malcolm X (1925–1965) American human rights activist
As featured in The Autobiography of Malcolm X http://www.colostate.edu/Orgs/MSA/find_more/m_x.html as told to Alex Haley and cited in Malcolm X: Why I Embraced Islam by Yusuf Siddiqui. <br class="br">Text of a letter written following his Hajj (1964)
“The logical picture of the facts is the thought.”
Ludwig Wittgenstein (1889–1951) Austrian-British philosopher
3
Original German: Das logische Bild der Tatsachen ist der Gedanke.
1920s, Tractatus Logico-Philosophicus (1922)
“The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age”
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Principles of Mathematics (1903), Ch. I: Definition of Pure Mathematics, p. 5
1900s
Context: The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age; and when this fact has been established, the remainder of the principles of mathematics consists in the analysis of Symbolic Logic itself.
Abraham Joshua Heschel (1907–1972) Polish-American Conservative Judaism Rabbi
"The Holy Dimension", p. 337.
Heschel made similar statements in earlier writings: The great insight is not attained when we ponder or infer the beyond from the here. In the realm of the ineffable, God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. He is not something to be sought in the darkness with the light of reason. He is the light.
Man Is Not Alone : A Philosophy of Religion (1951)
Moral Grandeur and Spiritual Audacity: Essays (1997)
Context: In the realm of faith, God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. To rationalists He is something after which they seek in the darkness with the light of their reason. To men of faith He is the light.
George Boole (1815–1864) English mathematician, philosopher and logician
Letter to William Thomson (2 January 1851), indicating his early work on what has since become known as Boolean logic.
1850s
Context: I am now about to set seriously to work upon preparing for the press an account of my theory of Logic and Probabilities which in its present state I look upon as the most valuable if not the only valuable contribution that I have made or am likely to make to Science and the thing by which I would desire if at all to be remembered hereafter.
Sarvepalli Radhakrishnan (1888–1975) Indian philosopher and statesman who was the first Vice President and the second President of India
Internet Encyclopedia of Philosophy
Context: The truths of the ṛṣis are not evolved as the result of logical reasoning or systematic philosophy but are the products of spiritual intuition, dṛṣti or vision. The ṛṣis are not so much the authors of the truths recorded in the Vedas as the seers who were able to discern the eternal truths by raising their life-spirit to the plane of universal spirit. They are the pioneer researchers in the realm of the spirit who saw more in the world than their followers. Their utterances are not based on transitory vision but on a continuous experience of resident life and power. When the Vedas are regarded as the highest authority, all that is meant is that the most exacting of all authorities is the authority of facts.
Barack Obama (1961) 44th President of the United States of America
Speaking after receiving a German media prize award in Baden-Baden, Germany on May 25, 2017. Source: Kirschbaum, Erik (25 May 2017). " In Berlin, Obama speaks out against hiding behind walls https://web.archive.org/web/20170527213811/http://www.nasdaq.com/article/in-berlin-obama-speaks-out-against-hiding-behind-walls-20170525-01010". Reuters via nasdaq.com. Archived from the original http://www.nasdaq.com/article/in-berlin-obama-speaks-out-against-hiding-behind-walls-20170525-01010 on 27 May 2017. Retrieved 27 May 2017. <br class="br">2017 <br class="br">Context: We can find people on the internet who agree with our ideas, no matter how crazy. Democracies do not work if we are not operating on some level based on reason and fact and logic - and not just passion. We're going to have to find ways to push back on propaganda and listen to those we don't agree with.
Tsunetomo Yamamoto book Hagakure
As translated by William Scott Wilson. This first sentence of this passage was used as a military slogan during the early 20th century to encourage soldiers to throw themselves into battle. Variant translations:
Bushido is realised in the presence of death. In the case of having to choose between life and death you should choose death. There is no other reasoning. Move on with determination. To say dying without attaining ones aim is a foolish sacrifice of life is the flippant attitude of the sophisticates in the Kamigata area. In such a case it is difficult to make the right judgement. No one longs for death. We can speculate on whatever we like. But if we live without having attaining that aim, we are cowards. This is an important point and the correct path of the Samurai. When we calmly think of death morning and evening and are in despair, We are able to gain freedom in the way of the Samurai. Only then can we fulfil our duty without making mistakes in life.
By the Way of the warrior is meant death. The Way of the warrior is death. This means choosing death whenever there is a choice between life and death. It means nothing more than this. It means to see things through, being resolved.
I have found that the Way of the samurai is death. This means that when you are compelled to choose between life and death, you must quickly choose death.
The way of the Samurai is in death.
I have found the essence of Bushido: to die!
Hagakure (c. 1716)
Context: The Way of the Samurai is found in death. When it comes to either/or, there is only the quick choice of death. It is not particularly difficult. Be determined and advance. To say that dying without reaching one's aim is to die a dog's death is the frivolous way of sophisticates. When pressed with the choice of life or death, it is not necessary to gain one's aim.
We all want to live. And in large part we make our logic according to what we like. But not having attained our aim and continuing to live is cowardice. This is a thin dangerous line. To die without gaining one's aim is a dog's death and fanaticism. But there is no shame in this. This is the substance of the Way of the Samurai. If by setting one's heart right every morning and evening, one is able to live as though his body were already dead, he gains freedom in the Way. His whole life will be without blame, and he will succeed in his calling.
“Only mathematics and mathematical logic can say as little as the physicist means to say.”
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
The Scientific Outlook (1931)
1930s
Context: Ordinary language is totally unsuited for expressing what physics really asserts, since the words of everyday life are not sufficiently abstract. Only mathematics and mathematical logic can say as little as the physicist means to say.
Robert A. Heinlein book The Cat Who Walks Through Walls
Gwen Novak (Hazel Stone); chapter 18, p. 230
The Cat Who Walks Through Walls (1985)
Context: The hardest part about gaining any new idea is sweeping out the false idea occupying that niche. As long as that niche is occupied, evidence and proof and logical demonstration get nowhere. But once the niche is emptied of the wrong idea that has been filling it — once you can honestly say, "I don't know", then it becomes possible to get at the truth.
Buckminster Fuller (1895–1983) American architect, systems theorist, author, designer, inventor and futurist
1970s, Synergetics: Explorations in the Geometry of Thinking (1975), The Wellspring of Reality
Context: We are in an age that assumes the narrowing trends of specialization to be logical, natural, and desirable. Consequently, society expects all earnestly responsible communication to be crisply brief.... In the meantime, humanity has been deprived of comprehensive understanding. Specialization has bred feelings of isolation, futility, and confusion in individuals. It has also resulted in the individual's leaving responsibility for thinking and social action to others. Specialization breeds biases that ultimately aggregate as international and ideological discord, which, in turn, leads to war.
William Golding (1911–1993) British novelist, poet, playwright and Nobel Prize for Literature laureate
Responses in a publicity questionnaire on Lord of the Flies from the American publishers, as quoted in Who Rules?: Introduction to the Study of Politics (1971) by Dick W. Simpson, p. 16
Context: The theme is an attempt to trace the defects of society back to the defects of human nature. The moral is that the shape of a society must depend on the ethical nature of the individual and not on any political system however apparently logical or respectable. The whole book is symbolic in nature except the rescue in the end where adult life appears, dignified and capable, but in reality enmeshed in the same evil as the symbolic life of the children on the island. The officer, having interrupted a man-hunt, prepares to take the children off the island in a cruiser which will presently be hunting its enemy in the same implacable way. And who will rescue the adult and his cruiser?
David Bohm book Wholeness and the Implicate Order
Wholeness and the Implicate Order (1980)
Context: My suggestion is that at each state the proper order of operation of the mind requires an overall grasp of what is generally known, not only in formal logical, mathematical terms, but also intuitively, in images, feelings, poetic usage of language, etc. (Perhaps we could say that this is what is involved in harmony between the 'left brain' and the 'right brain'). This kind of overall way of thinking is not only a fertile source of new theoretical ideas: it is needed for the human mind to function in a generally harmonious way, which could in turn help to make possible an orderly and stable society. <!-- p. xi
Eugene Paul Wigner (1902–1995) mathematician and Nobel Prize-winning physicist
Biographical memoir: "John von Neumann (1903 - 1957)" in Year book of the American Philosophical Society (1958); later in Symmetries and Reflections : Scientific Essays of Eugene P. Wigner (1967), p. 261
Context: A deep sense of humor and an unusual ability for telling stories and jokes endeared Johnny even to casual acquaintances. He could be blunt when necessary, but was never pompous. A mind of von Neumann's inexorable logic had to understand and accept much that most of us do not want to accept and do not even wish to understand. This fact colored many of von Neumann's moral judgments. "It is just as foolish to complain that people are selfish and treacherous as it is to complain that the magnetic field does not increase unless the electric field has a curl. Both are laws of nature." Only scientific intellectual dishonesty and misappropriation of scientific results could rouse his indignation and ire — but these did — and did almost equally whether he himself, or someone else, was wronged.
“Logic is the most useful tool of all the arts. Without it no science can be fully known.”
William of Ockham book Sum of Logic
Summa Logicae (c. 1323), Prefatory Letter, as translated by Paul Vincent Spade (1995) http://www.pvspade.com/Logic/docs/ockham.pdf <br class="br">Context: Logic is the most useful tool of all the arts. Without it no science can be fully known. It is not worn out by repeated use, after the manner of material tools, but rather admits of continual growth through the diligent exercise of any other science. For just as a mechanic who lacks a complete knowledge of his tool gains a fuller [knowledge] by using it, so one who is educated in the firm principles of logic, while he painstakingly devotes his labor to the other sciences, acquires at the same time a greater skill at this art.
“Logic has borrowed, perhaps, the rules of geometry, without comprehending their force”
Blaise Pascal (1623–1662) French mathematician, physicist, inventor, writer, and Christian philosopher
The Art of Persuasion
Context: Logic has borrowed, perhaps, the rules of geometry, without comprehending their force... it does not thence follow that they have entered into the spirit of geometry, and I should be greatly averse... to placing them on a level with that science that teaches the true method of directing reason.
Marvin Minsky (1927–2016) American cognitive scientist
Jokes and their Relation to the Cognitive Unconscious (1980)
Context: I am inclined to doubt that anything very resembling formal logic could be a good model for human reasoning. In particular, I doubt that any logic that prohibits self-reference can be adequate for psychology: no mind can have enough power — without the power to think about Thinking itself. Without Self-Reference it would seem immeasurably harder to achieve Self-Consciousness — which, so far as I can see, requires at least some capacity to reflect on what it does. If Russell shattered our hopes for making a completely reliable version of commonsense reasoning, still we can try to find the islands of "local consistency," in which naive reasoning remains correct.
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
The Analysis of Mind (1921), Lecture IX: Memory, p. 159
1920s
Context: There is no logical impossibility in the hypothesis that the world sprang into being five minutes ago, exactly as it then was, with a population that "remembered" a wholly unreal past. There is no logically necessary connection between events at different times; therefore nothing that is happening now or will happen in the future can disprove the hypothesis that the world began five minutes ago.
Norman Cousins (1915–1990) American journalist
"Freedom as Teacher" in Human Options : An Autobiographical Notebook (1981).
Context: There is a tendency to mistake data for wisdom, just as there has always been a tendency to confuse logic with values, intelligence with insight. Unobstructed access to facts can produce unlimited good only if it is matched by the desire and ability to find out what they mean and where they lead. Facts are terrible things if left sprawling and unattended. They are too easily regarded as evaluated certainties rather than as the rawest of raw materials crying to be processed into the texture of logic. It requires a very unusual mind, Whitehead said, to undertake the analysis of a fact. The computer can provide a correct number, but it may be an irrelevant number until judgment is pronounced.
“You reason colour more than you reason drawing Colour has a logic as severe as form.”
Pierre Bonnard (1867–1947) French painter and printmaker
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
Source: 1910s, Our Knowledge of the External World (1914), p. 21
Novalis (1772–1801) German poet and writer
Metaphysics, again, is the Dynamics of Thought; treats of the primary Powers of Thought; occupies itself with the mere Soul of the Science of Thinking. Metaphysical ideas stand related to one another, like thoughts without words. Men often wondered at the stubborn Incompletibility of these two Sciences; each followed its own business by itself; there was a want everywhere, nothing would suit rightly with either. From the very first, attempts were made to unite them, as everything about them indicated relationship; but every attempt failed; the one or the other Science still suffered in these attempts, and lost its essential character. We had to abide by metaphysical Logic, and logical Metaphysic, but neither of them was as it should be.
Pupils at Sais (1799)
Marilyn Frye book The Politics of Reality
Source: The Politics of Reality: Essays in Feminist Theory (1983), p. 60
“We can't spy on them if they aren't spying on us, now can we?" Warped logic, but okay.”
Gena Showalter (1975) American writer
Source: Alice in Zombieland
“When I get logical, and I don't trust my instincts - that's when I get in trouble.”
Angelina Jolie (1975) American actress, film director, and screenwriter
Scott Adams (1957) cartoonist, writer
"A Kind Word", in DNRC Newsletter #9 (December 1995) http://web.archive.org/web/19970412134441/www.unitedmedia.com/comics/dilbert/newsletter/html/newsletter09.html
“Art arises from sources other than logic." (p.32)”
Milan Kundera (1929–2023) Czech author of Czech and French literature
Source: Life is Elsewhere
“Because I am an inhuman monster, I tend to be logical,…”
Jeff Lindsay (1952) American playwright and crime novelist Jeffry P. Freundlich
Dave Eggers book A Heartbreaking Work of Staggering Genius
Source: A Heartbreaking Work of Staggering Genius
Mark Haddon book The Curious Incident of the Dog in the Night-Time
Source: The Curious Incident of the Dog in the Night-Time
“By your logic I should also be in charge of Solinade dances, needlework, and horse thieving.”
Patrick Rothfuss book The Name of the Wind
Source: The Name of the Wind
“Women do not think with logic and discretion but with emotions of the heart”
Cassandra Clare book Clockwork Prince
Source: Clockwork Prince
“The drive for power is even less logical than the sex urge… and stronger.”
Robert A. Heinlein book Stranger in a Strange Land
Source: Stranger in a Strange Land