Logic Quotes - Page 4

• Logic is a large drawer, containing some useful instruments, and many more that are superfluous. A wise man will look into it for two purposes, to avail himself of those instruments that are really useful, and to admire the ingenuity with which those that are not so, are assorted and arranged.

  Charles Caleb Colton

  Wise, Math, Men

  Charles Caleb Colton (1836). “Lacon: Or, Many Things in Few Words, Addressed to Those who Think”, p.163

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• Here at Wisconsin we didn't get an undergraduate course in mathematical logic until the '60s.

  Stephen Cole Kleene

  Mathematical Logic, Wisconsin, Undergraduate

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• It was a saying of the ancients, "Truth lies in a well;" and to carry on this metaphor, we may justly say that logic does supply us with steps, whereby we may go down to reach the water.

  Isaac Watts

  Lying, Water, Doe

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• There is science, logic, reason; there is thought verified by experience. And then there is California.

  Edward Abbey

  Travel, Fun, Crazy

  Edward Abbey (2015). “A Voice Crying in the Wilderness”, p.13, RosettaBooks

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• Pain always produces logic, which is very bad for you.

  Frank O'Hara

  Pain, Produce

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• Most of the mistakes in thinking are inadequacies of perception rather than mistakes of logic.

  Edward de Bono

  Mistake, Thinking, Perception

  Edward De Bono (1992). “Serious Creativity: Using the Power of Lateral Thinking to Create New Ideas”, Harpercollins

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• Logic teaches rules for presentation, not thinking.

  Mason Cooley

  Thinking, Teach, Presentation

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• Language is remarkable, except under the extreme constraints of mathematics and logic, it never can talk only about what it's supposed to talk about but is always spreading around.

  Howard Nemerov

  Sensual, Language, Mathematics

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• A civilization is a heritage of beliefs, customs, and knowledge slowly accumulated in the course of centuries, elements difficult at times to justify by logic, but justifying themselves as paths when they lead somewhere, since they open up for man his inner distance.

  Antoine de Saint-Exupery

  Distance, Men, Civilization

  Antoine de Saint Exupery (1942). “Flight to Arras”

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• Histories make men wise; poets, witty; the mathematics, subtle; natural philosophy, deep; moral, grave; logic and rhetoric, able to contend.

  Francis Bacon

  Wise, Witty, Philosophy

  'Essays' (1625) 'Of Studies'

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• The picture which the philosopher draws of the world is surely not one in which every stroke is necessitated by pure logic.

  Morris Raphael Cohen

  World, Philosopher, Strokes

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• The mathematician is entirely free, within the limits of the imagination, to construct what worlds he pleases.

  J. W. N. Sullivan

  Math, Imagination, World

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• From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other.

  Arthur Conan Doyle

  Math, Water, Possibility

  Arthur Conan Doyle (2007). “The New Annotated Sherlock Holmes: The Complete Short Stories: The Adventures of Sherlock Holmes and The Memoirs of Sherlock Holmes (Non-slipcased Edition) (Vol. 1) (The Annotated Books)”, p.151, W. W. Norton & Company

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• The want of logic annoys. Too much logic bores. Life eludes logic, and everything that logic alone constructs remains artificial and forced.

  Andre Gide

  Bores You, Annoyed, Literature

  The journals, 1889-1949. Vol 2. (p. 20), 1956.

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• The logic of validation allows us to move between the two limits of dogmatism and skepticism.

  Paul Ricoeur

  Moving, Validation, Two

  Paul Ricoeur (2006). “From Text to Action: Essays in Hermeneutics, II”

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• Consequently he who wishes to attain to human perfection, must therefore first study Logic, next the various branches of Mathematics in their proper order, then Physics, and lastly Metaphysics.

  Maimonides

  Order, Perfection, Wish

  Moses Maimonides (2016). “Guide for the perplexed”, p.298, Moses Maimonides

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• Practice has a logic which is not that of the logician.

  Pierre Bourdieu

  Practice

  Pierre Bourdieu (1990). “The Logic of Practice”, p.86, Stanford University Press

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• That Logic has advanced in this sure course, even from the earliest times, is apparent from the fact that, since Aristotle, it has been unable to advance a step, and thus to all appearance has reached its completion.

  Immanuel Kant

  Philosophy, Math, Facts

  Immanuel Kant (1855). “Critique of Pure Reason”, p.24

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• Logic and metaphysics make use of more tools than all the rest of the sciences put together, and do the least work.

  Charles Caleb Colton

  Together, Tools, Use

  Charles Caleb Colton (1823). “Remarks on the Talents of Lord Byron and the Tendencies of Don Juan”, p.231

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• The world is full of strange phenomena that cannot be explained by the laws of logic or science. Dennis Rodman is only one example.

  Dave Barry

  Law, Example, World

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• A wise man is not governed by others, nor does he try to govern them; he prefers that reason alone prevail.

  Jean de la Bruyere

  Wise, Men, Trying

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• No deeply rooted tendency was ever extirpated by adverse judgment. Not having originally been founded on argument, it cannot be destroyed by logic.

  George Henry Lewes

  Argument, Judgment, Tendencies

  "Problems of Life and Mind, First Series: The Foundations of a Creed". Book by George Henry Lewes. Volume 1, p. 7, 1874.

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• Why should I live my whole life where I don't want to be. [it's a good point - pretty hard to argue with that sort of logic really isn't it!

  Terry Goodkind

  Want, Arguing, Should

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• As to the most prudent logicians might venture to deduce from a skein of wool the probable existence of a sheep; so you, from the raw stuff of perception, may venture to deduce a universe which transcends the reproductive powers of your loom.

  Evelyn Underhill

  Sheep, Perception, May

  Evelyn Underhill, Aeterna Press (2014). “Practical Mysticism”, p.17, Aeterna Press

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• I don't see the logic of rejecting data just because they seem incredible.

  Fred Hoyle

  Data, Statistics, Incredibles

  Quoted in D.O. Edge and M.J. Mulkay's Astronomy Transformed (p. 432)

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