Logic Quotes

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  • Hope is independent of the apparatus of logic.

  • I feel that if people investigate the emergence of government, of State power - if they examine the logic of State power historically, and more specifically in the United States - they will find that the concept of limited government is not tenable once they adopt some type of libertarian principle.

    Interview with Jeff Riggenbach, reason.com. October 1979.
  • The concept of absolute, hence (or whence) springs, in the moral field, the moral laws or norms, represent, in the field of knowledge, the principle of identity, which is the fundamental law of the thought; norms of logic springs from it, that govern the thought (or mind) in the field of science." ("Le concept de l'absolu, d'où découlent, dans le domaine moral, les lois ou normes morales, constitue, le principe d'identité, qui est la loi fondamentale de la pensée; il en découle les normes logiques qui régissent la pensée dans le domaine de la science.")

    Spring   Law   Mind  
    "Paroles d'un sage: Choix de pensées d'African Spir" ("Words of a Sage : Selected thoughts of African Spir") by Hélène Claparède-Spir, (p. 59), 1937.
  • Neither the true nor the false roots are always real; sometimes they are imaginary; that is, while we can always imagine as many roots for each equation as I have assigned, yet there is not always a definite quantity corresponding to each root we have imagined.

    Real   Roots   Ontology  
  • Artists are mystics rather than rationalists. They leap to conclusions that logic cannot reach.

    Artist   Logic   Leap  
    Sol LeWitt (2006). “Sol LeWitt wall drawing 1176: seven basic colors and all their combinations in a square within a square : for Josef Albers”, Richter Verlag
  • To me, photography is the simultaneous recognition, in a fraction of a second, of the significance of an event as well as of a precise organization of forms which give that event its proper expression. And this organization, this precision, will always escape you, if you do not appreciate what a picture is, if you do not understand that the composition, the logic, the equilibrium of the surfaces and values are the only ways of giving meaning to all that is continuously appearing and vanishing before our very eyes.

  • The logic of the world is prior to all truth and falsehood.

    Ludwig Wittgenstein (1984). “Notebooks, 1914-1916”, p.32, University of Chicago Press
  • Proof is an idol before which the mathematician tortures himself.

  • 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.

    Life   Mean   Math  
    Bertrand Russell (1992). “The Basic Writings of Bertrand Russell, 1903-1959”, p.626, Psychology Press
  • The logic is backwards. Genius is the result of doing what you love, not a prerequisite for it.

    Charles Eisenstein (2013). “The Ascent of Humanity: Civilization and the Human Sense of Self”, p.70, North Atlantic Books
  • Capablanca possessed an amazing ability to quickly see into a position and intuitively grasp its main features. His style, one of the purest, most crystal-clear in the entire history of chess, astonishes one with his logic.

    Style   Chess   Crystals  
  • Nightmares exist outside of logic, and there's little fun to be had in explanations; they're antithetical to the poetry of fear.

    Fun   Littles   Logic  
    "Alan Wake: gaming's greatest Stephen King story" by Matthew Byrd, www.denofgeek.com. December 21, 2017.
  • Mysteries of attraction could not always be explained through logic. Sometimes the fractures in two separate souls became the very hinges that held them together.

    Two   Soul   Together  
    Lisa Kleypas (2011). “The Devil In Winter: Number 3 in series”, p.90, Hachette UK
  • Let no one rule your mind or body. Take special care that your thoughts remain unfettered... Give men your ear, but not your heart. Show respect for those in power, but don't follow them blindly. Judge with logic and reason, but comment not. Consider none your superior in life. Treat all fairly or they will seek revenge. Be careful with your money. Hold fast to your beliefs and others will listen.

    Life   Revenge   Heart  
    "Eragon". Book by Christopher Paolini, 2003.
  • Reason means truth and those who are not governed by it take the chance that someday the sunken fact will rip the bottom out of their boat.

    Rip   Mean   Intelligence  
  • I never guess. It is a shocking habit destructive to the logical faculty.

    Arthur Conan Doyle (2016). “The Sign of the Four”, p.21, Arthur Conan Doyle
  • Calculus works by making visible the infinitesimally small.

    Keith Devlin (2003). “Sets, Functions, and Logic: An Introduction to Abstract Mathematics, Third Edition”, p.7, CRC Press
  • Like music or art, mathematical equations can have a natural progression and logic that can evoke rare passions in a scientist. Although the lay public considers mathematical equations to be rather opaque, to a scientist an equation is very much like a movement in a larger symphony. Simplicity. Elegance. These are the qualities that have inspired some of the greatest artists to create their masterpieces, and they are precisely the same qualities that motivate scientists to search for the laws of nature. LIke a work of art or a haunting poem, equations have a beauty and rhythm all their own.

    Michio Kaku (1995). “Hyperspace: A Scientific Odyssey Through Parallel Universes, Time Warps, and the Tenth Dimension”, p.130, Oxford University Press, USA
  • It is difficult to remove by logic an idea not placed there by logic in the first place.

    Ideas   Firsts   Logic  
    Gordon Livingston (2009). “Too Soon Old, Too Late Smart: Thirty True Things You Need to Know Now”, p.12, Da Capo Press
  • I have forced myself to contradict myself in order to avoid conforming to my own taste.

    Art   Order   Ontology  
    Arturo Schwarz, Marcel Duchamp (1997). “The complete works of Marcel Duchamp”, Delano Greenridge Editions
  • Absolute virtue is impossible and the republic of forgiveness leads, with implacable logic, to the republic of the guillotine.

    Albert Camus (2012). “The Rebel: An Essay on Man in Revolt”, p.124, Vintage
  • Logic is one thing and commonsense another.

    Math   Logic   Reasoning  
    Elbert Hubbard (1911). “A Thousand & One Epigrams: Selected from the Writings of Elbert Hubbard”
  • Colleges don't teach economics properly. Unfortunately we learn little from the experience of the past. An economist must know, besides his subject, ethics, logic, philosophy, the humanities and sociology, in fact everything that is part of how we live and react to one another.

  • When you are faced with prejudice, logic and justice are impotent. Still, we may have an obligation to argue directly into the face of the prejudice, even though there is no chance to win.

    "How to Argue and Win Every Time: At Home, at Work, in Court, Everywhere, Every Day". Book by Gerry Spence, March 1995.
  • As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted; as an art, it furnishes such rules as may be derived from those principles, for guarding against erroneous deductions.

    Art   Mind   Principles  
  • You can't win. Logic has no power over her when her territory has been invaded by heathens.

    Mira Grant (2010). “Feed: The Newsflesh Trilogy:”, p.69, Hachette UK
  • Perhaps there is supranatural: reason beyond the normal definitions of fact or data-based logic; something that only makes sense if you can see a bigger picture of reality. Maybe that is where faith fits in.

    Reality   Data   Normal  
  • China has consistently surprised us. When I returned from the United States many years ago, it was unimaginable that we would end up where we are now. What China has achieved defies all logic. I credit this to the hard work and enterprising spirit of the Chinese people.

    Source: www.spiegel.de
  • Scholars and artists thrown together are often annoyed at the puzzle of where they differ. Both work from knowledge; but I suspectthey differ most importantly in the way their knowledge is come by. Scholars get theirs with conscientious thoroughness along projected lines of logic; poets theirs cavalierly and as it happens in and out of books. They stick to nothing deliberately, but let what will stick to them like burrs where they walk in the fields.

    Book   Artist   Annoyed  
    "The Figure a Poem Makes". Essay by Robert Frost, 1939.
  • Logic is immaturity weaving its nets of gossamer wherewith it aims to catch the behemoth of knowledge. Logic is a crutch for the cripple, but a burden for the swift of foot and a greater burden still for the wise.

    Wise   Feet   Immaturity  
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