Quotes About Logic

Among all the liberal arts, the first is logic, and specifically that part of logic which gives initial instruction about words. ... [T]he word "logic" has a broad meaning, and is not restricted exclusively to the science of argumentative reasoning. [It includes] Grammar [which] is "the science of speaking and writing correctly-the starting point of all liberal studies."

All logic texts are divided into two parts. In the first part, on deductible logic, the fallacies are explained; in the second part, on inductive logic, they are committed.

But with man the case is otherwise, in that when logic leads to any humiliating conclusion, the sole effect is to discredit logic.

Business logic and musical logic are utterly incompatible.

What do you think science is? There is nothing magical about science. It is simply a systematic way for carefully and thoroughly observing nature and using consistent logic to evaluate results. So which part of that exactly do you disagree with? Do you disagree with being thorough? Using careful observation? Being systematic? Or using consistent logic?

Beneath words and logic are emotional connections that largely direct how we use our words and logic.

There is a logic of language and a logic of mathematics.

We know that mathematicians care no more for logic than logicians for mathematics. The two eyes of science are mathematics and logic; the mathematical set puts out the logical eye, the logical set puts out the mathematical eye; each believing that it sees better with one eye than with two. Note that De Morgan, himself, only had sight with only one eye.

The principles of logic and mathematics are true simply because we never allow them to be anything else. And the reason for this is that we cannot abandon them without contradicting ourselves, without sinning against the rules which govern the use of language, and so making our utterances self-stultifying. In other words, the truths of logic and mathematics are analytic propositions or tautologies.

The best magic always results from ecstasies of logic.

Comedy is a blood sport. It flays the truth and spurts twisted logic. In America, people become comics because we don't have bullfighting.

Take heed all of you who have at heart mankind's future! Take heed men and women of good will! May the temptation to seek revenge give way to the courage to forgive; may the culture of life and love render vain the logic of death; may trust once more give breath to the lives of peoples.

Logic is the art of going wrong with confidence.

If there are more than two sexes, then so be it and, of course, the assumption that there are two helps shape, as many have argued, the binary logic that underpins much of the history of western philosophy.

There is a logic [to my reading], but I can't define it. I like reading impulsively. I collect books, I have a lot of them, but most of them I have not read yet. I'll read them when they call me from the shelf.

Nothing is so deceptive as human reasoning, - nothing so slippery and reversible as what we have decided to call 'logic.' The truest compass of life is spiritual instinct.

When I began my career as a cosmologist some twenty years ago, I was a convinced atheist. I never in my wildest dreams imagined that one day I would be writing a book purporting to show that the central claims of Judeo-Christian theology are in fact true, that these claims are straightforward deductions of the laws of physics as we now understand them. I have been forced into these conclusions by the inexorable logic of my own special branch of physics.

I approach my life with logic. I do not act on impulse or emotion. I very seldom find that I say, 'And then I can't think what came over me, but I did this or that or the other.' I nearly always know how I will act and I nearly always act in that way. I don't catch myself out in embarrassing situations because I've acted without forethought. I calculate what I will do.

Sir, we must beware of needless innovation, especially when guided by logic.

Fear is the enemy of logic.

Fear," the doctor said, "is the relinquishment of logic, the willing relinquishing of reasonable patterns. We yield to it or we fight it, but we cannot meet it halfway.

The best defense against logic is ignorance.

Developing a compiler was a logical move; but in matters like this, you don't run against logic - you run against people who can't change their minds.

It's very disconcerting to have a camera shoved in your face. It's really discombobulating. If you're the least bit nervous you forget what you just said, you can't find your way through, you can't follow the logic of your own statements sometimes. It's a weird sensation. And I think that really helps to lock people in place.

Poets often describe love as an emotion that we can't control, one that overwhelms logic and common sense. That's what it was like for me. I didn't plan on falling in love with you, and I doubt if you planned on falling in love with me. But once we met, it was clear that neither of us could control what was happening to us. We fell in love, despite our differences, and once we did, something rare and beautiful was created. For me, love like that has happened only once, and that's why every minute we spent together has been seared in my memory. I'll never forget a single moment of it.

What I love about directing is finding common ground in complementary palate with wardrobe, set design, the camera department, the makeup department, et cetera. I love figuring out that synergy. To have everything work in concert is amazing, I love working with that kind of logic. Directing is a cavalcade of taste decisions - this one or that one, but I raather enjoy it and am in the process of setting up the next endeavor.

Forever I shall be a stranger to myself. In psychology as in logic, there are truths but no truth.

When a person does something, it has the man or woman look about it. It drips with humanity. You can follow the logic of it and see the meaning behind it.

Does the logic connect? What are the range of probably outcomes? You want to figure out what those probabilities are and ideally be the House. It's fine to gamble, as long as you're the House. Also, listen to critical feedback, particularly from friends. Generally they will be thinking it but they won't tell you.

Control of thought is more important for governments that are free and popular than for despotic and military states. The logic is straightforward: a despotic state can control its domestic enemies by force, but as the state loses this weapon, other devices are required to prevent the ignorant masses from interfering with public affairs, which are none of their business… the public are to be observers, not participants, consumers of ideology as well as products.

Just between you and me, shouldn’t the World Bank be encouraging MORE migration of the dirty industries to the LDCs [Less Developed Countries]?... I think the economic logic behind dumping a load of toxic waste in the lowest wage country is impeccable and we should face up to that... I’ve always though that under-populated countries in Africa are vastly UNDER-polluted, their air quality is probably vastly inefficiently low compared to Los Angeles or Mexico City.

Writing is more than just the making of a series of comprehensible statements: it is the gathering in of connotations; the harvesting of them, like blackberries in a good season, ripe and heavy, snatched from among the thorns of logic.

I'm not involved in any Philadelphia-related game or situation. When people claim I'm going to have a "vendetta" against every other Eastern Conference team I don't understand the logic: I'm not the one doling out the punishment.

What I like about the jokes, to me it's a lot of logic, no matter how crazy they are. It has to make absolute sense, or it won't be funny.

Intuitionists think that there are cases in which, say, some identity statement between real numbers is neither true nor false, even though we know that it cannot possibly be false. That is: We know that it cannot not be that a = b, say, but we cannot conclude that a = b. We can't, in general, move from not-not-p to p in intuitionistic logic. , I suggest that the believer in vague objects should say something similar. It can never be true that it is vague whether A is B. But that does not imply that there is always a fact of the matter whether A is B.

Consensual paranoia - the pathology of the normal person who is a member of a war-justifying society - forms the template from which all the images of the enemy are created. By studying the logic of paranoia, we can see why certain archetypes of the enemy must necessarily recur, no matter what the historical circumstances.

I spent 10 years in professional politics and eight writing comics, and so I look at it from both sides. I don't understand the logic in being frustrated with a system, so you choose to be a part of the reason why the system is so frustrating. If everybody voted, it wouldn't be this way.

There's an internal coherence and logic to what they get from [Rush] Limbaugh, Glenn Beck, and the rest of these guys. And they sound very convincing, they're very self-confident, and they have an answer to everything - a crazy answer, but it's an answer. And it's our fault if that goes on. So one thing to be done is don't ridicule these people, join them, and talk about their real grievances and give them a sensible answer, like, "Take over your factories."

Let him who is not come to logic be plagued with continuous and everlasting filth

The fact that logic cannot satisfy us awakens an almost insatiable hunger for the irrational.

Forgotten were the elementary rules of logic, that extraordinary claims require extraordinary evidence and that what can be asserted without evidence can also be dismissed without evidence.

I love Logic Audio and have been using it for years. All my track outputs used to come up on my old board in the same order as in the old Mac G4 - 1 through 32, came up as 1 through 32, for instance.

Alchemy and Kabbalah are later developments in my thinking. I think the primary interest has been the relationship of magic and mystery to logic and understanding. Those are the primary driving forces of my life. I have this ability, for some reason, to be able to hold both the Magical MysteryTour we're on in conjunction with the logical rigor of understanding theoretical physics, which makes me kind of a rare bird, because usually you're one or the other.

At the heart of all sales and marketing is the ability to create demand even in the absence of logic.

Logic is a wonderful thing but doesn't always beat actual thought.

The way people really think is not adequately analyzed by the universal categories of logic. Between social history and formal analyses of thought there is a path, a lane - maybe very narrow - which is the path of the historian of thought.

Can one understand politics without understanding history, especially the history of political thought, and will this distinguish political philosophy from some other kinds of philosophy (such as, perhaps, logic) to which the study of history is not integral?

First the husband tried to make the wife his possession, and once she is a possession he loses interest. There is some hidden logic in it: his whole interet was to possess; now that is finished, and he would like to try some other woman so he can again go on another trip of possesion.