LOGIC :; The principle governing human intellection. Its nature may be deduced from examining the following propositions, both of which are held by human beings to be true and often by the same people: “I can’t so you musn’t,” and “I can but you musn’t.”
The most ordinary things are to philosophy a source of insoluble puzzles. With infinite ingenuity it constructs a concept of space or time and then finds it absolutely impossible that there be objects in this space or that processes occur during this time.... the source of this kind of logic lies in excessive confidence in the so-called laws of thought.ludwig boltzmann
The word "essay" means to try out, test, probe. In the essay style, successive clauses and sentences are not produced by an overarching logic, but by association; the impression that prose gives is that it can go anywhere in a manner wholly unpredictable.stanley fish
The minute you take away somebody the public's voting for, you're screwing with the program. There's no logic to it.nigel lythgoe
It was an earnest, extreme, and irreverant book, a book that, in its mockery of authority, its relentless logic, its relentless hewing to the line of Reason, letting the sacred cows fall where they might, followed the old familiar script: CAMPUS REBEL FLAYS FACULTY. But the script was all balled up, for the author was more reactionary than any of the dignitaries in their black robes, and his book damned Yale as a hotbed of atheism and collectivism.dwight macdonald
We must question the story logic of having an all-knowing all-powerful God, who creates faulty Humans, and then blames them for his own mistakes.Gene Roddenberry
If a lack of empirical foundations is a defect of the theory of logical probability, it is also a defect of deductive logic.david stove
Briefly, you can only find truth with logic if you have already found truth without it.gilbert keith chesterton
There is no smoke without fire, and there is no ethically repugnant principle without logic.anthony daniels
The facts of nature are what they are, but we can only view them through the spectacles of our mind. Our mind works largely by metaphor and comparison, not always (or often) by relentless logic. When we are caught in conceptual traps, the best exit is often a change in metaphor not because the new guideline will be truer to nature (for neither the old nor the new metaphor lies “out there” in the woods), but because we need a shift to more fruitful perspectives, and metaphor is often the best agent of conceptual transition.stephen jay gould
Substantial changes, introduced during the last half of the 20th century, have built a structure so expanded beyond the original Darwinian core, and so enlarged by new principles of macroevolutionary explanation, that the full exposition, while remaining within the domain of Darwinian logic, must be construed as basically different from the canonical theory of natural selection, rather than simply extended.stephen jay gould
"There are only two possible statements that can be made about the worlds ," the Black Pope of the Carlist Hills had lectured one day. "Alpha: There is a God . Omega: there is not a God. To adhere to either of these two statements strongly is to be logical at least. Not to do so is to be in the snivelling wasteland between and to have no point of contact with logic or reason ."r. a. lafferty
You're people, in short, who must be stupid, insane, or evil to continue arguing in the face of indisputable facts and irrefutable logic that others must be forced into a state of helplessness and victimized by individual criminals or the state. Stupid, insane, or evil.l. neil smith
When you are faced with prejudice, logic and justice are impotent. Still, we may have an obligation to argue directly into the face of the prejudice, even though there is no chance to win.gerry spence
...a theorem of propositional logic if and only if f(p1, p2 ,..., pn) is a tautology . ... He (Emil L.Post) uses the word to discuss the adequacy of a system of functions to express all the possible truth tables (this is nowadays called truth-functional completeness). In this way he shows not only that through the connectives of Principia (? and ?) one can generate all possible truth tables but also that there are only two connectives which can, singly generate all the truth tables.
A logical theory may be tested by its capacity for dealing with puzzles, and it is a wholesome plan, in thinking about logic, to stock the mind with as many puzzles as possible, since these serve much the same purpose as is served by experiments in physical science.
Enterprise architecture is the organizing logic for business processes and IT infrastructure reflecting the integration and standardization requirements of a company's operation model... The key to effective enterprise architecture is to identify the processes, data, technology, and customer interfaces that take the operating model from vision to reality.
Pure logic is the ruin of the spirit.
Conceptual graphs are system of logic based on the existential graphs of Charles Sanders Peirce and the semantic networks of artificial intelligence. The purpose of the system is to express meaning in a form that is logically precise, humanly readable, and computationally tractable.
Allegans contraria non est audiendus (Jenk. Cent. 16): "He is not to be heard who alleges things contradictory to each other." This elementary rule of logic expresses, in technical language, the saying that a man shall not be permitted to "blow hot and cold" with reference to the same transaction, or insist, at different times, on the truth of each of two conflicting allegations, according to the promptings of his private interest. Says the Satyr, if you have gotten a trick of blowing hot and cold out of the same mouth, I've e'en done with ye.
The substantial rules of pleading are founded in strong sense, and in the soundest and closest logic; and so appear, when well understood and explained:;: Though, by being misunderstood and misapplied, they are often made use of as instruments of chicane.
Much of my work in this period was concerned with exploring the logic of economic models, but also with attempting to reconcile the models with every day observation.
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 then any previous knowledge.simon singh
logic takes care of itself; all we have to do is to look and see how it does it.ludwig wittgenstein
logic hasn't wholly dispelled the society of witches and prophets and sorcerers and soothsayers.
The creative scientist lives in a 'wildness of logic,' where reason is the handmaiden and not the master.marston morse