Quotes About Logic

First, in your sermons, use your logic, and then your rhetoric; Rhetoric without logic, is like a tree with leaves and blossoms, but no root; yet more are taken with rhetoric than logic, because they are caught with fine expressions when they understand not reason.

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."

Logic, n. The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding. The basic of logic is the syllogism, consisting of a major and a minor premise and a conclusion - thus: Major Premise: Sixty men can do a piece of work sixty times as quickly as one man. Minor Premise: One man can dig a post-hole in sixty seconds; Therefore- Conclusion: Sixty men can dig a post-hole in one second. This may be called syllogism arithmetical, in which, by combining logic and mathematics, we obtain a double certainty and are twice blessed.

Grammar and logic free language from being at the mercy of the tone of voice. Grammar protects us against misunderstanding the sound of an uttered name; logic protects us against what we say have double meaning.

Logic is a wonderful invention. It is so wonderful, people often mistake it for reason. Reason, however, requires sense. Logic requires only consistency.

The nineteenth century was completely lacking in logic, it had cosmic terms and hopes, and aspirations, and discoveries, and ideals but it had no logic.

To know and not to know, to be conscious of complete truthfulne­ss while telling carefully constructe­d lies, to hold simultaneo­usly two opinions which cancelled out, knowing them to be contradict­ory and believing in both of them, to use logic against logic, to repudiate morality while laying claim to it, to believe that democracy was impossible and that the Party was the guardian of democracy.

You asked me how to get out of the finite dimensions when I feel like it. I certainly don't use logic when I do it. Logic's the first thing you have to get rid of.

Logic plus logic equals the illogical. Do you know what I mean?

If pressed to supplement Tweedledee's ostensive definition of logic with a discursive definition of the same subject, I would say that logic is the systematic study of the logical truths. Pressed further, I would say that a sentence is logically true if all sentences with its grammatical structure are true. Pressed further still, I would say to read this book.

Our ego seeks to understand everything. It wants all the answers. Part of what destroys the ego and connects us with the light is doing things that absolutely don't make any sense. If we want something beyond logic, like a miracle, we have to do something that is beyond logic.

The logic of words should yield to the logic of realities.

My life isn’t theories and formulae. It’s part instinct, part common sense. Logic is as good a word as any, and I’ve absorbed what logic I have from everything and everyone… from my mother, from training as a ballet dancer, from Vogue magazine, from the laws of life and health and nature.

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 of the analysis of Symbolic Logic itself.

Logic doesn't really provide for loyalty. If your logic changes suddenly and things not make sense, you can alter your allegiance, but love stops you from being able to do that.

Mathematicians care no more for logic than logicians for mathematics.

The minute you take away somebody the public's voting for, you're screwing with the program. There's no logic to it.

How do you get from, "We do not know whether this is protectable human life," to "Therefore, we will not protect it?" Wouldn't the logic just as likely (some would say far more likely) be, "Since we do not know whether this is protectable human life, therefore we will protect it?" Why does the judicial uncertainty about the humanity of the unborn lead to unbridled license to destroy it?

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.

Insanity is often the logic of an accurate mind overtasked.

We didn't want to live anymore in the old logic. And I like that. The consequence of that is to create the dream of that, but we all know this dream may be not possible. So here we have the key of the ambiguity of the atmosphere of my films. Is it possible, this dream? Is it as funny as it seems, or is it tragic?

…It’s not that you don’t have the capacity to accept the truth. You don’t want to accept it, and you hide behind your own logic and intelligence while the truth marches by. Step out and join it, for goodness’’ sake! Shout it out in full step! I believe!

The individual's life is of importance to none besides himself: the point is whether he wishes to escape from history or give his life for it. History recks nothing of human logic

It’ll probably be brutal, too. They might even feed you to the dog. He doesn’t have a dog. Yeah, well, he might get one just to feed you to it. She’d never been the kind of person to let something as ridiculous as rational logic interfere with her fear.’ (Alix)

As in political revolutions, so in paradigm choice--there is no standard higher than the assent of the relevant community. To discover how scientific revolutions are effected, we shall therefore have to examine not only the impact of nature and of logic, but also the techniques of persuasive argumentation effective within the quite special groups that constitute the community of scientists.

You need a long hard day's work to reveal the logic of the craving for very bad tv and alcohol.

Dialectic thought is an attempt to break through the coercion of logic by its own means.

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.

Certainly in order to understand the natural world one needs clarity, logic, and the capacity for theory building. But that understanding tends to improve because and to the extent that it is provisional, hypothetical, when it looks for disconfirmation in the particular rather than final proof as a universal.

I learned early that you'd better know what you're talking about. You'd better realize that certain issues are going to be so hot - no matter what reason, what logic you apply to it - you're going to be met with an opposition just because their viewpoint is different, and there's no way they're going to accept your reasoning. Furthermore, they're going to attack you because you will be portrayed as not being credible: "You're an actor. What do you know?"

The true Logic for this world is the Calculus of Probabilities, which takes account of the magnitude of the probability.

A nervous excitability, a chronic exaltation of the passion, in which commingle the inferior life of the individual and its exterior manifestations, a state in which sentiment, idea, and will are confounded together, where for the lack of the powerful corrective of logic, the flights of imagination know no bounds, where life and human activity are deprived of a regulator, and move outside of material and concrete factors, by the sole interior force of the soul.

What the teacher does is sweep all of the logic, order and reason onto one side and make that side very strong.

With his new CD 'Tactiles' Liberty Ellman emerges as one of the most intriguing, albeit unorthodox, guitarists on the New York scene today. An album of original, esoteric compositions marked by dense polyrhythms, dissonant, angular lines and an organic logic that ties the whole thing together in brilliant fashion.

The "can do" logic, by its own nature, does not accept limits. And an empire does not have a graceful way to evolve out of this role. History demonstrates this time and again.

The devil has a Ph.D. in perfect logic.

You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic.

In life, particularly in public life, psychology is more powerful than logic.

Not for the first time in my life, and certainly not for the last, a self-righteous gloom had edged out all semblance of logic.

Any useful logic must concern itself with Ideas with a fringe of vagueness and a Truth that is a matter of degree.

Whenever humanity seems condemned to heaviness, I think I should fly like Perseus into a different space. I don't mean escaping into dreams or into the irrational. I mean that I have to change my approach, look at the world from a different perspective, with a different logic and with fresh methods of cognition and verification.

I perceive the world in fragments. It is somewhat like being on a very fast train and getting glimpses of things in strange scales as you pass by. A person can be very, very tiny. And a billboard can make a person very large. You see the corner of a house or you see a bird fly by, and it's all fragmented. Somehow, in painting I try to make some logic out of the world that has been given to me in chaos. I have a very pretentious idea that I want to make life, I want to make sense out of it. The fact that I am doomed to failure - that doesn't deter me in the least.

Originality doesn't consist of saying it first, originality consists of saying it in a way that is specifically tailored to the moment in which you are addressing - and at the moment when the complications arise, challenging the logic of what you're doing.

By the cold Darwinian logic of natural selection, evolution codifies happenstance into strategy.

I still partially suffer from the delusion that if you explain things logically and systematically, most people will abandon their emotional prejudices and respond to logic. But I don't suffer from that delusion as wholeheartedly as I did in the past. So if there's a fundamental difference, it's that I've accepted the fact that most imbeciles will never 'get' me and I shouldn't allow myself to get so upset about it.

it was the United States which first established general suffrage for men upon the two principles that 'taxation without representation is tyranny' and that governments to be just should 'derive their consent from the governed.' The unanswerable logic of these two principles is responsible for the extension of suffrage to men and women the world over. In the United States, however, women are still taxed without 'representation' and still live under a government to which they have given no 'consent.

The so-called law of induction cannot possibly be a law of logic, since it is obviously a proposition with a sense.--Nor, therefore, can it be an a priori law.

There is another method of obtaining money... It does not presuppose the existence of accumulated results of previous development, and hence may be considered as the only one which is available in strict logic. This method of obtaining money is the creation of purchasing power by banks. The form it takes is immaterial.