Logic Quotes

500+ Sourced quotes

Logic and sermons never convince,
The damp of the night drives deeper into my soul.

During Christ's millennial reign nothing contrary to righteousness will exist. You will find no liquor shops, night clubs, gambling casinos …ad infinitum on the streets of the kingdom. Logic, and more importantly, Scripture indicates that all immorality will be removed at the inauguration of Christ's earthly kingdom.

A conspiracy is everything that ordinary life is not. It's the inside game, cold, sure, undistracted, forever closed off to us. We are the flawed ones, the innocents, trying to make some rough sense of the daily jostle. Conspirators have a logic and a daring beyond our reach.

I find poetic links, the logic of poetry in cinema, extraordinarily pleasing. They seem to me perfectly appropriate to the potential of cinema as the most truthful and poetic of art forms. Certainly I am more at home with them than with traditional theatrical writing which links images through the linear rigid logical development of plot. That sort of fussily correct way of linking events usually involves arbitrarily forcing them into sequence in obedience to some abstract notion of order. And even when this is not so, even when the plot is governed by the characters, one finds that the links which hold it together rest on a facile interpretation of life's complexities.

Andrei Tarkovsky

During our session, I told Tove about how I'd done mind-speak on Duncan, but it only worked when I was irritated. Using that logic, Tove spent most of the morning trying to irritate me into using it. Sometimes it worked, but most of the time I just got pointlessly annoyed.

It does not matter how many people chose moral duty over the rationality of self-preservation, what does matter is that some did. Evil is not all-powerful. It can be resisted. The testimony of the few who did resist shatters the authority of the logic of self-preservation. It shows it for what it is in the end: a choice.

The inclination to believe in the fantastic may strike some as a failure in logic, or gullibility, but it's really a gift. A world that might have Bigfoot and the Loch Ness Monster is clearly superior to one that definitely does not.

Chris Van Allsburg

But, indeed, the science of logic and the whole framework of philosophical thought men have kept since the days of Plato and Aristotle, has no more essential permanence as a final expression of the human mind, than the Scottish Longer Catechism.

It has always been on the written page that the world has come into focus for me. If I can piece all these bits of memory together with the diaries and letters and the scribbled thoughts that clutter my mind and bookshelves, then maybe I can explain what happened. Maybe the worlds I have inhabited for the past seven years will assume order and logic and wholeness on paper. Maybe I can tell my story in a way that is useful to someone else.

The race of prophets is extinct. Europe is becoming set in its ways, slowly embalming itself beneath the wrappings of its borders, its factories, its law-courts and its universities. The frozen Mind cracks between the mineral staves which close upon it. The fault lies with your mouldy systems, your logic of 2 + 2 = 4. The fault lies with you, Chancellors, caught in the net of syllogisms. You manufacture engineers, magistrates, doctors, who know nothing of the true mysteries of the body or the cosmic laws of existence. False scholars blind outside this world, philosophers who pretend to reconstruct the mind. The least act of spontaneous creation is a more complex and revealing world than any metaphysics.

Evolutionary psychology was the organizing framework—the source of explanatory adequacy or a theory of the computation —that the science of psychology had been missing. Like vision and language, our emotions and cognitive faculties are complex, useful, and nonrandomly organized, which means that they must be a product of the only physical process capable of generating complex, useful, nonrandom organization, namely, natural selection. An appeal to evolution was already implicit in the metatheoretical directives of Marr and Chomsky, with their appeal to the function of a mental faculty, and evolutionary psychology simply shows how to apply that logic to the rest of the mind.

If texts are unified by a central logic of argument, then their pictorial illustrations are integral to the ensemble, not pretty little trifles included only for aesthetic or commercial value. Primates are visual animals, and (particularly in science) illustration has a language and set of conventions all its own.

Stephen Jay Gould

Stopping Mike Tyson from assaulting Naomi Campbell at a party in New York:

Tyson: Do you know who the fuck I am? I'm the heavyweight champion of the world.
Ayer: And I am the former Wykeham Professor of Logic. We are both pre-eminent in our field. I suggest we talk about this like rational men.

Alfred Jules Ayer

Logic issues in tautologies, mathematics in identities, philosophy in definitions; all trivial, but all part of the vital work of clarifying and organising our thought.

Frank P. Ramsey

A mathematician is not a man who can readily manipulate figures; often he cannot. He is not even a man who can readily perform the transformation of equations by the use of calculus. He is primarily an individual who is skilled in the use of symbolic logic on a high plane, and especially he is a man of intuitive judgment in the choice of the manipulative processes he employs.

There is no logic that can be superimposed on the city; people make it, and it is to them, not buildings, that we must fit our plans.

So, a talking parrot, three hundred people flying through the sky in a big tin can called a 747, a human being growing inside another person, and men walking on the moon don't contradict logic?

Let us conceive, then, of an algebra in which the symbols x, y z etc. admit indifferently of the values 0 and 1, and of these values alone The laws, the axioms, and the processes, of such an Algebra will be identical in their whole extend with the laws, the axioms, and the processes of an Algebra of Logic. Difference of interpretation will alone divide them. Upon this principle the method of the following work is established.

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

Although I've never been an atheist, there are periods when I struggled with the whole thing. As someone who uses words, you need to able to justify your belief with language, I'd have arguments and the atheist always won because he'd go back to logic. Belief in God is illogical, it's absurd. There's no debate. I feel it intuitively, it comes from the heart, a magical place. But I still I fluctuate from day to day. Sometimes I feel very close to the notion of God, other times I don't. I used to see that as a failure. Now I see it as a strength, especially compared to the more fanatical notions of what God is. I think doubt is an essential part of belief.

If we understood the world, we would realize that there is a logic of harmony underlying its manifold apparent dissonances.

To pretend that you cannot exchange goods and services freely with a Frenchman or an Italian, unless there is an identical standard of bathing beaches or tap water in the different countries is not logic. It is naked aggression.

Then he reflected that reality does not usually coincide with our anticipation of it; with a logic of his own he inferred that to forsee a circumstantial detail is to prevent its happening. Trusting in this weak magic, he invented, so that they would not happen, the most gruesome details.

Jorge Luis Borges

It seemed too easy to claim that there was nothing new under the sun, that … our spear-wielding ancestors had been as wise and good as ourselves and that the onward march of rational thought had brought with it nothing but tragedy. Did any of these arguments take into account Ariane's profile on her way up? Did they credit the impeccable logic of her hydraulic systems? And most of all, did not such bromides merely betray the resentment of a defeated and unimaginative class? I felt my allegiances shift to the engineers and technicians around me, these new medicine men who often sported baseball caps, and had a tendency towards unsophisticated humour. What astonishing creatures they were! What extraordinary horizons they had opened up!

Alain de Botton

If the reason I give is a good one, you will act upon it. If it is a bad one I cannot make it better by piling epithet upon epithet. There is no logic in abuse; there is no argument in an epithet.

Robert G. Ingersoll