Quotes About Logic

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

Clinging to any form of conservatism can be dangerous. Become too conservative and you are unprepared for surprises. You cannot depend on luck. Logic is blind and often knows only its own past. Logic is good for playing chess but is often too slow for the needs of survival.

Logic cannot model causal systems, and paradox is generated when time is ignored [as in logic].

Arithmetic is where the content lies, and not logic; but logic prompts certainty, and not arithmetic.

Anything outside yourself, this you can see and apply your logic to it. But it's a human trait that when we encounter personal problems, these things most deeply personal are the most difficult to bring out for our logic to scan. We tend to flounder around, blaming everything but the actual, deep-seated thing that's really chewing on us.

It is possible--indeed possible even according to the old conception of logic--to give in advance a description of all 'true' logical propositions. Hence there can never be surprises in logic.

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

I have said that science is impossible without faith. ... Inductive logic, the logic of Bacon, is rather something on which we can act than something which we can prove, and to act on it is a supreme assertion of faith ... Science is a way of life which can only fluorish when men are free to have faith.

Logic is justly considered the basis of all other sciences, even if only for the reason that in every argument we employ concepts taken from the field of logic, and that ever correct inference proceeds in accordance with its laws.

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.

Stories are there to be told, and each story changes with the telling. Time changes them. Logic changes them. Grammar changes them. History changes them. Each story is shifted side-ways by each day that unfolds. Nothing ends. The only thing that matters, as Faulkner once put it, is the human heart in conflict with itself. At the heart of all this is the possibility, or desire, to create a piece of art that talks to the human instinct for recovery and joy.

Logic is the technique by which we add conviction to truth.

I'm not at my best when I moralize or philosophize. Logic is elusive, especially to one who so rarely uses it.

My sense of reality and logic is different from most people's.

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.

The message I hope to have sent is just the example of being yourself. I tell this to my students: It's not about copying me or my logic systems. It's about allowing yourself to be yourself.

I took biology in high school and didn't like it at all. It was focused on memorization. ... I didn't appreciate that biology also had principles and logic ... [rather than dealing with a] messy thing called life. It just wasn't organized, and I wanted to stick with the nice pristine sciences of chemistry and physics, where everything made sense. I wish I had learned sooner that biology could be fun as well.

Let no one rule your mind or body. Take special care that your thoughts remain unfettered... Give men your ear, but not your heart. Show respect for those in power, but don't follow them blindly. Judge with logic and reason, but comment not. Consider none your superior in life. Treat all fairly or they will seek revenge. Be careful with your money. Hold fast to your beliefs and others will listen.

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?

My father was very political. But he told me, "Be very careful when you get into politics, because there's no black and white. There's an in-between in everything. So look at that side, don't take one point, because then you are negating half of the other people. Try to find the logic on a problem, something that you believe, and take the position that you believe, but be very careful about it." So I was very well trained in that aspect.

To argue that we humans are capable of complex multifarious thought and feeling, whereas the sheep's perception is probably limited by lowly sheepish perceptions, is no more to the point than if I were to slaughter and eat you on the grounds that I am a sophisticated personality able to enjoy Mozart, formal logic and cannibalism, whereas your imaginative world seems confined to True Romances and tinned spaghetti.

You can't win. Logic has no power over her when her territory has been invaded by heathens.

Every song has a composer, every book has an author, every car has a maker, every painting has a painter, and every building has a builder. So it isn't irrational to take this simple logic a little further and say that nature must have had a Maker. It would be irrational to believe that it made itself.

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.

Certain issues in philosophy of science (having to do with observation and the definition of a theory's empirical import) had beenmisconstrued as issues in philosophy of logic and of language. With respect to modality, I hold the exact opposite: important philosophical problems concerning language have been misconstrued as relating to the content of science and the nature of the world. This is not at all new, but is the traditional nominalist line.

The best defense against logic is ignorance.

Some people will follow their minds without listening to their hearts, and others will follow their hearts without listening to their minds. This is why reason exists, for there to be balance between the heart and mind. We were not meant to follow the mind and ignore the heart. Instead, we were meant to follow the heart over the mind, but without completely abandoning logic. The middle way is the preferred way, and this path simply means to allow your heart to drive you, but do not forget to balance reason with your conscience.

Admit nothing - that was his first rule. Appeal to logic - second rule. Delay the inevitable - third rule.

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

This means that no single logic is strong enough to support the total construction of human knowledge.

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.

If you go in for argument take care of your temper. Your logic if you have any will take care of itself.

If you apply reason and logic to this career of mine, you're not going to get very far. You simply won't.

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.

Proofs exist only in mathematics and logic, not in science.

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.

Our efforts are not aimed at isolating Israel or de-legitimizing it; rather we want to gain legitimacy for the cause of the people of Palestine. We only aim to de-legitimize the settlement activities and the occupation and apartheid and the logic of ruthless force, and we believe that all the countries of the world stand with us in this regard.

The environment forces you to be utterly dependent between "action" and "cut" because the environment is perfect on your fellow actor. So as an acting exercise, it's absolutely thrilling that the focus that we had to bring to each other echoed in life, echoed in art. And when you get that parallel, it's really thrilling and it's full of surprises, but it all has a logic.

All fundamentalist theologians make the ordinances of creation an essential part of creation and absolutize them. Women belong at home, fulfil their life through motherhood, by caring for their husbands and serving them. The fixed role pattern of one particular economic and family order is transformed into an order willed by God and given by creation. With a methodologically similar logic, slaves were understood as those elected by God to serve the whites.

The only rule was that the stuff had to be funny and pretty short. To me, the quintessential Army Man joke was one of John Swartzwelder's: 'They can kill the Kennedys. Why can't they make a cup of coffee that tastes good?' It's a horrifying idea juxtaposed with something really banal-and yet there's a kind of logic to it. It's illuminating because it's kind of how Americans see things: Life's a big jumble, but somehow it leads to something I can consume. I love that.

You can define a net two ways, depending on your point of view. Normally you would say it is a meshed instrument designed to catch fish. But you could, with no great injury to logic, reverse the image and define the net as a jocular lexicographer once did: he called it a collection of holes tied together with string.

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.

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.

Even death after a long illness is without warning. The moment you had prepared for so carefully took you by storm. The troops broke through the window and snatched the body and the body is gone. ... Death reduces us to the baffled logic of a small child. If yesterday why not today?

Logic is one thing and commonsense another.

It's hard to find logic in things sometimes. That's why I can't analyze things too much, because it often doesn't make much sense.

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.