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 enjoy logic and logic puzzles. And filmmaking is one fun logic puzzle that you gotta win.

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?

there are the two sides to a Frenchman, logic and fashion and that is the reason why French people are exciting and peaceful. Logic and fashion.

There is no logic like the logic of the heart.

Let the Spirit be lacking, and there may be wisdom of words, but not the wisdom of God; the powers of oratory, but not the power of God; the demonstration of argument and the logic of the schools, but not the demonstration of the Holy Spirit, the all-convincing logic of His lightning flash, such as convinced Saul before the Damascus gate. When the Spirit was outpoured the disciples were all filled with power from on high, the most unlettered tongue could silence gainsayers, and with its new fire burn its way through obstacles as flames fanned by mighty winds sweep through forests.

The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age; and when this fact has been established, the remainder of the principles of mathematics consists of the analysis of Symbolic Logic itself.

The main condition is that the spiritual ear should be open to overhear and patiently take in, and the will ready to obey that testimony which, I believe, God bears in every human heart, however dull, to those great truths which the Bible reveals. This, and not logic, is the way to grow in religious knowledge, to know that the truths of religion are not shadows, but deep realities.

What a silly thing love is!' said the student as he walked away. 'It is not half as useful as logic, for it does not prove anything, and it is always telling one of things that are not going to happen, and making one believe things that are not true. In fact, it is quite unpractical, and, as in this age to be practical is everything, I shall go back to philosophy and study metaphysics.' So he returned to his room and pulled out a great dusty book, and began to read.

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 ... or change. Once such incantatory phrases as "we see now through a glass darkly" and "mysterious are the ways". He chooses His wonders to perform" are mastered, logic can be happily tossed out the window". Religious mania is one of the few infallible ways of responding to the world's vagaries, because it totally eliminates pure accident. To the true religious maniac, it's all on purpose.

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.

Mathematics expresses values that reflect the cosmos, including orderliness, balance, harmony, logic, and abstract beauty.

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.

I laugh, mirthless, a mad laugh. I savor the scowl on her face, the hate in her eyes. She was like a machine; she was cold and emotionless, bound by logic alone. And I broke her.

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.

Nothing is as depressing as absolute logic. Look at the maze of French politics perpetrated by a logical people.

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.

What's amazing about a DJ set is when you're able to re-appropriate a song or give purpose to a song that people didn't really think it was supposed to have. Give it this sort of hidden power by playing it before this song and after that one. That it fits into this logic and it goes farther than you thought it could go.

When I began my career as a cosmologist some twenty years ago, I was a convinced atheist. I never in my wildest dreams imagined that one day I would be writing a book purporting to show that the central claims of Judeo-Christian theology are in fact true, that these claims are straightforward deductions of the laws of physics as we now understand them. I have been forced into these conclusions by the inexorable logic of my own special branch of physics.

My goal is simple. All I want to do is re-connect people with animals. Awaken some emotions and some feelings and some logic, that is been buried and suppressed, intentionally, by our society.

If language had been the creation not of poetry but of logic, we should only have one.

We're not all the same. A common liberal refrain is that differences between individuals are statistically more significant than those between cultural, ethnic, and racial groups. I don't see why the fact of inter-individual differences would nullify inter-group variance. That's liberal logic for you.

There's only one thing you can use against pure logic, and that's common sense.

President Bush Sr. and Secretary Baker, way back when, told Gorbachev, "We are not going to advance NATO into Eastern Europe. We're not going to - we're not going to advance NATO into East Germany, if you allow the unification of Germany." Where is that pledge? Where is the logic behind a military alliance, devised in the time of communism, before the Berlin Wall fell, now being in the Ukraine, in Poland, in Estonia, in Latvia and Lithuania? I don't understand.

If there was no risk, it wouldn't be art. It wouldn't be worth making. There is risk even in a fairy tale. Fiction is closest to pure narrative, and pure narrative is simply the logic we try to impose on an ever-changing reality.

I read one or two other books which gave me a background in mathematics other than logic.

There can never be surprises in logic.

As in political revolutions, so in paradigm choice--there is no standard higher than the assent of the relevant community. To discover how scientific revolutions are effected, we shall therefore have to examine not only the impact of nature and of logic, but also the techniques of persuasive argumentation effective within the quite special groups that constitute the community of scientists.

Logic and mathematics are nothing but specialised linguistic structures.

Poets often describe love as an emotion that we can't control, one that overwhelms logic and common sense. That's what it was like for me. I didn't plan on falling in love with you, and I doubt if you planned on falling in love with me. But once we met, it was clear that neither of us could control what was happening to us. We fell in love, despite our differences, and once we did, something rare and beautiful was created. For me, love like that has happened only once, and that's why every minute we spent together has been seared in my memory. I'll never forget a single moment of it.

Every moment of living has its own logic, its own meaning.

What the teacher does is sweep all of the logic, order and reason onto one side and make that side very strong.

Why is it, my shadow-striding friend, that we don't fear dreams? We lose consciousness, lose control, things happen with no apparent logic and abiding by no apparent rules.... We don't fear dreams, but we do fear madness, and death terrifies us.

What Artistic and Scientific Experience Have in Common - Where the world ceases to be the scene of our personal hopes and wishes, where we face it as free beings admiring, asking, and observing, there we enter the realm of Art and Science. If what is seen and experienced is portrayed in the language of logic, we are engaged in science. If it is communicated through forms whose connections are not accessible to the conscious mind but are recognized intuitively as meaninful, then we are engaged in art. Common to both is the loving devotion to that which transcends personal concerns and volition.

Howard's enchanting Hospice obeys its own magical inner logic with excellent prose and a sadness that will split open hearts. You have in your hands a story that is inquisitive, gripping, and triumphant.

Does the logic connect? What are the range of probably outcomes? You want to figure out what those probabilities are and ideally be the House. It's fine to gamble, as long as you're the House. Also, listen to critical feedback, particularly from friends. Generally they will be thinking it but they won't tell you.

Logic! Good gracious! What rubbish!

You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic.

Logic has nothing to do with oppression.

Perhaps there is supranatural: reason beyond the normal definitions of fact or data-based logic; something that only makes sense if you can see a bigger picture of reality. Maybe that is where faith fits in.

I perceive the world in fragments. It is somewhat like being on a very fast train and getting glimpses of things in strange scales as you pass by. A person can be very, very tiny. And a billboard can make a person very large. You see the corner of a house or you see a bird fly by, and it's all fragmented. Somehow, in painting I try to make some logic out of the world that has been given to me in chaos. I have a very pretentious idea that I want to make life, I want to make sense out of it. The fact that I am doomed to failure - that doesn't deter me in the least.

We've got to be able to break through the barrier of logic

The example of a syllogism that he had studied in Kiesewetter's logic: Caius is a man, men are mortal, therefore Caius is mortal, had throughout his whole life seemed to him right only in relation to Caius, but not to him at all.

You can only find truth with logic if you have already found truth without it.

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.

I love the psychology versus math and logic. In algebra, "X" means any possible variable. I sort of think about "X" in terms of the equation of my own life. Adding "X" to my own life has given me a freedom that I didn't have before in the equation of my own existence.

Victims suggest innocence. And innocence, by the inexorable logic that governs all relational terms, suggests guilt.