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."

I end with a word on the new symbols which I have employed. Most writers on logic strongly object to all symbols. ... I should advise the reader not to make up his mind on this point until he has well weighed two facts which nobody disputes, both separately and in connexion. First, logic is the only science which has made no progress since the revival of letters; secondly, logic is the only science which has produced no growth of symbols.

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.

It is difficult to remove by logic an idea not placed there by logic in the first place. By nature, we are emotional creatures. Often we live and react based on feelings, not logic. Feelings are wonderful, but when we become tied to a particular thought or belief we tend to ignore the fact that change might be necessary.

If such external influences are intrinsic to religion, then logic and scientific thought dictate that there must be a mechanism by which this influence is transmitted. A religious or spiritual belief that involves an invisible undetectable force that nonetheless influences human actions and behavior or that of the world itself produces a situation in which a believer has no choice but to have faith and abandon logic--or simply not care.

Love is not the absence of logic but logic examined and recalculated heated and curved to fit inside the contours of the heart.

There is no morality by instinct. There is no social salvation in the end without taking thought; without mastery of logic and application of logic to human experience.

I think every film is somehow a political film. You show a perspective and a world that has logic, and that logic is inserted into a political environment, and it means something. Yes, why not?

Trust is an absurd phenomenon, logically absurd. That's why logic always says love is blind, although love has its own eyes, far more deep-going...still, to logic it is blind.

Why should ANYTHING go right; even observation and deduction? Why should not good logic be as misleading as bad logic? They are both movements in the brain of a bewildered ape?

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

A God who fits within the confines of our conception is useless. God cannot be comprehended by man's conception or logic. God is an eternal being who transcends the framework of man's limited logic.

I loved logic, math, computer programming. I loved systems and logic approaches. And so I just figured architecture is this perfect combination.

All the Dachaus must remain standing. The Dachaus, the Belsens, the Buchenwalds, the Auschwitzes - all of them. They must remain standing because they are a monument to a moment in time when some men decided to turn the Earth into a graveyard. Into it they shoveled all of their reason, their logic, their knowledge,,then we become the gravediggers.

Logic only tells us what's there; it can't really address what isn't. Even the most devoted empiricist must admit that we have no hope of understanding the universe. Some things are unknowable.

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.

And yet when i finally drifted of in that barely conscious state where logic was absent and dreams encroached i could almost hear bone's voice. he was whispering that same promise he'd made to me months ago when our relationship started and i wondered if it was a sign - and if he'd really meant it. If you run from me i'll chase you. And i'll find you.

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.

The logic of war seems to be if the belligerent can fight, he will fight. That leaders will not surrender until surrender is academic. How is a national leader to explain the sacrifice of so much for nothing?

Atlantis: Fabled. Mystical. Golden. Mysterious. Glorious and magical. There are those who claim that it never was. But then there are also those who think they are safe in this modern world of technology and weapons. Safe from all the ancient evils. They even believe that wizards, warriors, and dragons are long dead. They are fools clinging to their science and logic while thinking it will save them. (Thrylos)

It was the most convulted, ridiculous piece of logic I'd heard in awhile... It was something I would have come up with.

The art of reasoning becomes of first importance. In this line antiquity has left us the finest models for imitation; I should consider the speeches of Livy, Sallust, and Tacitus, as pre-eminent specimens of logic, taste, and that sententious brevity which, using not a word to spare, leaves not a moment for inattention to the hearer. Amplification is the vice of modern oratory.

Be grateful simply for being alive. When you are grateful for life, pure and simple, your life becomes one you can be grateful for. That may strike you as circular or even backward logic, but your attitude really does have an effect on how things work out. When you can't change your life any other way, you can still change your attitude. When you do, your life changes. You find more chances to love, and you will be surprised to see how much more love is returned to you.

There can never be surprises in logic.

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

Right up till the 1980s, SF envisioned giant mainframe computers that ran everything remotely, that ingested huge amounts of information and regurgitated it in startling ways, and that behaved (or were programmed to behave) very much like human beings... Now we have 14-year-olds with more computing power on their desktops than existed in the entire world in 1960. But computers in fiction are still behaving in much the same way as they did in the Sixties. That's because in fiction [artificial intelligence] has to follow the laws of dramatic logic, just like human characters.

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)

None who has known the charity of wine, Its pity, the cool logic of its spell Will waver in his loyalty, or dwell In any heaven where the grape lacks a shrine.

Logic is the foundation of the certainty of all the knowledge we acquire.

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

Be brief on the logic and reason portion of your presentation. There are probably about a thousand facts about an automobile, but you don't need them all to make a decision. About a half dozen will do.

Logic is neither an art nor a science but a dodge.

I got out of the elevator and confronted Mr. Wexler. “Killing is wrong.” “We kill chickens,” Mr. Wexler said. “We kill cows. We kill trees. So big deal, we kill some drug dealers.” It was hard to argue with that kind of logic because I like cows and chickens and trees much better than drug dealers.

The heart is a strange beast and not ruled by logic.

Politics is about realities, not logic.

If we accept the logic of the Declaration, reverence for God is not just a matter of religious faith, it is the foundation of justice and citizenship in our republic.

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."

In every enterprise ... the mind is always reasoning, and, even when we seem to act without a motive, an instinctive logic still directs the mind. Only we are not aware of it, because we begin by reasoning before we know or say that we are reasoning, just as we begin by speaking before we observe that we are speaking, and just as we begin by seeing and hearing before we know what we see or what we hear.

If it was as logical as that, I wouldn't continue to feel as bad as I do. I know what you're saying, and you're absolutely right in a way. But logic and rationality only go so far. Then you know what happens? Ha! Then your heart adds its two cents and everything reasonable goes right-out-the-window.

Any suggestion that science and religion are incompatible flies in the face of history, logic, and common sense.

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.

It's a simple exercise; a little logic, a little taste, and the will to cooperate.

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

There is nothing that one can say about acting, writing, producing or directing that cannot be revoked in the next breath. Nothing is immutable. The logic of one year is a folly of the next.

What seems certain is that Pythagoras developed the idea of mathematical logic. He realized that numbers exist independently of the tangible world and therefore their study was untainted by inaccuracies of perception. This meant he could discover truths which were independent of opinion of prejudice and which were more absolute than any previous knowledge.

Fasting was good for the imagination but bad for logic.

The prevailing notion is that the state should be neutral as to religion, and furthermore, that the best way to be neutral about it is to avoid all mention of it. By this sort of logic, nudism is the best compromise among different styles of dress. The secularist version of 'pluralism' amounts to theological nudism.