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."

Kurt Godel's achievement in modern logic is singular and monumental - indeed it is more than a monument, it is a landmark which will remain visible far in space and time. ... The subject of logic has certainly completely changed its nature and possibilities with Godel's achievement.

Water is two parts hydrogen and one part oxygen. What if someone says, “Well, that’s not how I choose to think about water.”? All we can do is appeal to scientific values. And if he doesn’t share those values, the conversation is over. If someone doesn’t value evidence, what evidence are you going to provide to prove they should value it? If someone doesn’t value logic, what logical argument could you provide to show the importance of 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.

And most of all, it means continually drawing connections among these seemingly disparate struggles—asserting, for instance, that the logic that would cut pensions, food stamps, and health care before increasing taxes on the rich is the same logic that would blast the bedrock of the earth to get the last vapors of gas and the last drops of oil before making the shift to renewable energy.

Anti-Semitism is best understood as a virus. It has no logic. Jews were hated because they were rich and because they were poor; because they were capitalists and because they were communists; because they held tenaciously to an ancient faith and because they were rootless cosmopolitans, believing nothing. Hate needs no logic. It is a sickness of the soul.

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.

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.

There is no learned man but will confess be hath much profited by reading controversies,--his senses awakened, his judgment sharpened, and the truth which he holds firmly established. If then it be profitable for him to read, why should it not at least be tolerable and free for his adversary to write? In logic they teach that contraries laid together, more evidently appear; it follows then, that all controversy being permitted, falsehood will appear more false, and truth the more true; which must needs conduce much to the general confirmation of an implicit truth.

Many teachers will tell you to believe; then they put out your eyes of reason and instruct you to follow only their logic. But I want you to keep your eyes of reason open; in addition, I will open in you another eye, the eye of wisdom.

But logic is not all, one needs one's heart to follow an idea.

The totality of our so-called knowledge or beliefs, from the most casual matters of geography and history to the profoundest laws of atomic physics or even of pure mathematics and logic, is a man-made fabric which impinges on experience only along the edges. Or, to change the figure, total science is like a field of force whose boundary conditions are experience.

I believe that in any initiative, you can't have a flavor of the month. When you believe something is profound in a company, you can not be a logical leader. You have to go to the lunatic fringe. There is no way that logic is what you need to change people.

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.

People want to ignore what they can't understand. They're looking for logic at any cost.

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?

And if at times you renounce experience and mind's heavy logic, it seems that the world has rushed along on its orbit, leaving you alone flying above a forgotten cloud bank, somewhere in the solitude of interstellar space.

There is no difference between religion and politics. Both involve lies and fanatical beliefs that generaly defy logic... Just like rock climbing.

As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted; as an art, it furnishes such rules as may be derived from those principles, for guarding against erroneous deductions.

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

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

I reached in experience the nirvana which is unborn, unrivalled, secure from attachment, undecaying and unstained. This condition is indeed reached by me which is deep, difficult to see, difficult to understand, tranquil, excellent, beyond the reach of mere logic, subtle, and to be realized only by the wise.

We Americans claim to be a peace-loving people. We hate bloodshed; we are opposed to violence. Yet we go into spasms of joy over the possibility of projecting dynamite bombs from flying machines upon helpless citizens. We are ready to hang, electrocute, or lynch anyone, who, from economic necessity, will risk his own life in the attempt upon that of some industrial magnate. Yet our hearts swell with pride at the thought that America is becoming the most powerful nation on earth, and that she will eventually plant her iron foot on the necks of all other nations. Such is the logic of patriotism.

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

People who are unable to use their hands skillfully for all kinds of work, will not become good thinkers and will behave awkwardly in life. It is not the head alone, but the whole human being that is a logician. Activities demanding manual and bodily skill, such as knitting, leads to the enhancement of the faculty of judgment. This faculty is actually developed least of all by exercises in logic.

The first race of mankind used to dispute, as our ordinary people do now-a-days, in a kind of wild logic, uncultivated by rule of art.

I cannot tell by what logic we call a toad, a bear, or an elephant ugly; they being created in those outward shapes and figures which best express the actions of their inward forms.

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.

Logic sometimes makes monsters. For half a century we have seen a mass of bizarre functions which appear to be forced to resemble as little as possible honest functions which serve some purpose.

For once, I believe that PETA, at least on the level of logic, is correct. If the NCAA has to protect offended Native Americans ... by God, PETA ought to advocate for the protection of every organism in the animal kingdom.

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.

Man associates ideas not according to logic or verifiable exactitude, but according to his pleasure and interests. It is for this reason that most truths are nothing but prejudices.

Language is a form of human reason, which has its internal logic of which man knows nothing.

School was more than academics; an education prepared you for the humdrum of real life: working with others, tempering one's personality to assimilate with the group but without losing your individual identity, understading the factors of logic, reasoning, and debate. For a person - vampire or human - to succeed in the world, unlocking the mysteries of the universe was insufficient. One would also need to grasp the mysteries of human nature.

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.

Once there was Louis Armstrong blowing his beautiful top in the muds of New Orleans; before him the mad musicians who had paraded on official days and broke up their Sousa marches into ragtime. Then there was swing, and Roy Eldridge, vigorous and virile, blasting the horn for everything it had in waves of power and logic and subtlety - leaning into it with glittering eyes and a lovely smile and sending it out broadcast to rock the jazz world.

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.

The beauty of religious mania is that it has the power to explain everything. Once God (or Satan) is accepted as the first cause of everything which happens in the mortal world, nothing is left to chance...logic can be happily tossed out the window.

Love puts all logic to sleep. Otherwise, we wouldn't risk it.

Logic doesn't apply to the real world. D. R. Hofstadter and D. C. Dennett (eds.) The Mind's I, 1981.

No one who was not by nature a lover of logic, and an extreme precisian in the use of words and phrases, could have written the two "Alice" books.

In chess the most unbelievable thing for me is that it's a game for everybody: rich, poor, girl, boy, old, young. It's a fantastic game which can unite people and generations! It's a language which you'll find people "speak" in every country. If you reach a certain level you find a very rich world! Art, sport, logic, psychology, a battlefield, imagination, creativity not only in practical games but don't forget either how amazing a feeling it is to compose a study, for example (unfortunately that's not appreciated these days but it's a fantastic part of chess!).

In rare moments of deep play, we can lay aside our sense of self, shed time's continuum, ignore pain, and sit quietly in the absolute present, watching the world's ordinary miracles. No mind or heart hobbles. No analyzing or explaining. No questing for logic. No promises. No goals. No relationships. No worry. One is completely open to whatever drama may unfold.

The main thesis of mind-physics holds that consciousness and matter are both manifestations of a more primary entity, and that the processes of manifestation exhibit equivalent invariances for both consciousness and matter. When the program for mind-physics is complete the subject-object dichotomy of modal logic, the polarity of concept-percept, and the antagonism between morality and technology will all come to an end. Then the non-repeatable experiment will be understood to be more primary than the traditional repeatable experiment.

Based on the considerations of history, ancient history, and international axioms, the logic of following up a citizen with his shadow for the purpose of the demarcation of political frontiers of any state has been discounted for international conventions. For example the Arabs cannot ask Spain just because they were there some time in the past nor can they ask for any other area outside the frontiers of the Arab homeland

I think that children have a power to imagine that is almost magical when compared to the adult imagination, and this is something irrevocable that a child loses when he or she becomes bound by logic. We adults continue to have our children