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Logic Quotes

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Logic Quotes

“My theory stands as firm as a rock; every arrow directed against it will return quickly to its archer. How do I know this? Because I have studied it from all sides for many years; because I have examined all objections which have ever been made against the infinite numbers; and above all because I have followed its roots, so to speak, to the first infallible cause of all created things.”

“The statement of ideas in a poem may have to do with logic. More profoundly, it may be identified with the emotional progression of the poem, in terms of the music and images, so that the poem is alive throughout. Another, more fundamental statement in poetry, is made through the images themselves those declarations, evocative, exact, and musical, which move through time and are the actions of a poem.”

“I am now about to set seriously to work upon preparing for the press an account of my theory of Logic and Probabilities which in its present state I look upon as the most valuable if not the only valuable contribution that I have made or am likely to make to Science and the thing by which I would desire if at all to be remembered hereafter.”

“Dialectic, which is the parent of logic, came itself from rhetoric. Rhetoric is in turn the child of the myths and poetry of ancient Greece. That is so historically, and that is so by any application of common sense. The poetry and myths are the response of a prehistoric people to the Universe around them made on the basis of Quality. It is Quality, not dialectic, which is the generator of everything we know.”

“It has been a long road from Plato's Meno to the present, but it is perhaps encouraging that most of the progress along that road has been made since the turn of the twentieth century, and a large fraction of it since the midpoint of the century. Thought was still wholly intangible and ineffable until modern formal logic interpreted it as the manipulation of formal tokens. And it seemed still to inhabit mainly the heaven of Platonic ideals, or the equally obscure spaces of the human mind, until computers taught us how symbols could be processed by machines.”

“I remember one English teacher in the eighth grade, Florence Schrack, whose husband also taught at the high school. I thought what she said made sense, and she parsed sentences on the blackboard and gave me, I'd like to think, some sense of English grammar and that there is a grammar, that those commas serve a purpose and that a sentence has a logic, that you can break it down. I've tried not to forget those lessons, and to treat the English language with respect as a kind of intricate tool.”

“Slavery in America was perpetuated not merely by human badness but also by human blindness. ... Men convinced themselves that a system that was so economically profitable must be morally justifiable. ... Science was commandeered to prove the biological inferiority of the Negro. Even philosophical logic was manipulated [exemplified by] an Aristotlian syllogism: All men are made in the image of God; God, as everyone knows, is not a Negro; Therefore, the Negro is not a man.”

“It is unwise to equate scientific activity with what we call reason, poetic activity with what we call imagination. Without the imaginative leap from facts to generalisation, no theoretic discovery in science is made. The poet, on the other hand, must not imagine but reason--that is to say, he must exercise a great deal of consciously directed thought in the selection and rejection of his data: there is a technical logic, a poetic reasoning in his choice of the words, rhythms and images by which a poem's coherence is achieved.”

“The science of logic never made a man reason rightly, and the science of ethics never made a man behave rightly. The most such sciences can do is to help us to catch ourselves up and check ourselves, if we start to reason or to behave wrongly; and to criticise ourselves more articulately after we have made mistakes.”

“Why all this insistence on the senses? Because in order to convince your reader that he is THERE, you must assault each of his senses, in turn, with color, sound, taste, and texture. If your reader feels the sun on his flesh, the wind fluttering his shirt sleeves, half your fight is won. The most improbable tales can be made believable, if your reader, through his senses, feels certain that he stands at the middle of events. He cannot refuse, then, to participate. The logic of events always gives way to the logic of the senses.”

“If you look at Cinderhella, from a production design aspect, I tried to find an interesting, iconic character, having her face wrapped up in bandages. That was funny. On the dream logic level, you'll see the parallels of that interesting connection that I made. There's a reason why she's called Cinderhella.”

“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.”

“In this world are very few things made from logic alone. It is illogical for man to be too logical. Some things we must just let stand. The mystery is more important than any possible explanation. The searcher after truth must search with humanity. Ruthless logic is the sign of a limited mind. The truth can only add to the sum of what you know, while a harmless mystery left unexplored often adds to the meaning of life. When a truth is not so important, it is better left as a mystery.”

“I watched as Humphrey Bogart’s character used beans as a metaphor for the relative unimportance in the wider world of his relationship with Ingrid Bergman’s character, and chose logic and decency ahead of his selfish emotional desires. The quandary and resulting decision made for an engrossing film. But this was not what people cried about. They were in love and could not be together. I repeated this statement to myself, trying to force an emotional reaction. I couldn’t. I didn’t care. I had enough problems of my own.”

“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.”

“The primary threat to nature and people today comes from centralising and monopolising power and control. Not until diversity is made the logic of production will there be a chance for sustainability, justice and peace. Cultivating and conserving diversity is no luxury in our times: it is a survival imperative.”

“Summer was here again. Summer, summer, summer. I loved and hated summers. Summers had a logic all their own and they always brought something out in me. Summer was supposed to be about freedom and youth and no school and possibilities and adventure and exploration. Summer was a book of hope. That's why I loved and hated summers. Because they made me want to believe.”

“Even as a young man, Vito Corleone became known as a "man of reasonableness." He never uttered a threat. He always used logic that proved to be irresistible. He always made certain that the other fellow got his share of profit. Nobody lost. He did this, of course, by obvious means. Like many businessmen of genius he learned that free competition was wasteful, monopoly efficient. And so he simply set about achieving that efficient monopoly.”

“Imagine an eye unruled by man-made laws of perspective, an eye unprejudiced by compositional logic, an eye which does not respond to the name of everything but which must know each object encountered in life through an adventure of perception. How many colors are there in a field of grass to the crawling baby unaware of ‘Green?’ How many rainbows can light create for the untutored eye?”

“...mathematics is distinguished from all other sciences except only ethics, in standing in no need of ethics. Every other science, even logic, especially in its early stages, is in danger of evaporating into airy nothingness, degenerating, as the Germans say, into an arachnoid film, spun from the stuff that dreams are made of. There is no such danger for pure mathematics; for that is precisely what mathematics ought to be.”

“Once we admit that there is room for newness - that there are vastly more conceivable possibilities than realized outcomes - we must confront the fact that there is no special logic behind the world we inhabit, no particular justification for why things are the way they are. Any number of arbitrarily small perturbations along the way could have made the world as we know it turn out very differently.”

“Development of Western science is based on two great achievements: the invention of the formal logical system (in Euclidean geometry) by the Greek philosophers, and the discovery of the possibility to find out causal relationships by systematic experiment (during the Renaissance). In my opinion, one has not to be astonished that the Chinese sages have not made these steps. The astonishing thing is that these discoveries were made at all.”

“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.”

“Some ideas are not born of logic and good sense. They are made of clouds and cobwebs. They sprout from nowhere and feed on excitement, sprinkled with adventure juice and the sweet flavor of the forbidden. The psyche moves from the realms of the ordinary and takes a delicate step towards the unknown. We know we shouldn't and that is exactly why we do.”

“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.”

“They [the mathematicians of the Enlightenment] defined their terms vaguely and used their methods loosely, and the logic of their arguments was made to fit the dictates of their intuition. In short, they broke all the laws of rigor and of mathematical decorum. The veritable orgy which followed the introduction of the infinitesimals... was but a natural reaction. Intuition had too long been held imprisoned by the severe rigor of the Greeks. Now it broke loose, and there were no Euclids to keep its romantic flight in check.”