Logic Quotes

I think a strong claim can be made that the process of scientific discovery may be regarded as a form of art. This is best seen in the theoretical aspects of Physical Science. The mathematical theorist builds up on certain assumptions and according to well understood logical rules, step by step, a stately edifice, while his imaginative power brings out clearly the hidden relations between its parts. A well constructed theory is in some respects undoubtedly an artistic production. A fine example is the famous Kinetic Theory of Maxwell. ... The theory of relativity by Einstein, quite apart from any question of its validity, cannot but be regarded as a magnificent work of art.

As hatred is defined as intense dislike, what is wrong with inciting intense dislike of a religion, if the activities or teachings of that religion are so outrageous, irrational or abusive of human rights that they deserve to be intensely disliked?

Ruthlessness is the most practical of emotions, Reen's voice whispered. She ignored it.

Wrong way to think about it. Don't try to figure it out all at once.

It remains to mention some of the ways in which people have spoken misleadingly of logical form. One of the commonest of these is to talk of 'the logical form' of a statement; as if a statement could never have more than one kind of formal power; as if statements could, in respect of their formal powers, be grouped in mutually exclusive classes, like animals at a zoo in respect of their species. But to say that a statement is of some one logical form is simply to point to a certain general class of, e.g., valid inferences, in which the statement can play a certain role. It is not to exclude the possibility of there being other general classes of valid inferences in which the statement can play a certain role

...what about the stone, Mr Lovegood? The thing you call the Resurrection Stone?""What of it?""Well, how can that be real?""Prove that it is not," said Xenophilius.Hermione looked out

Most plans are critically flawed by their own logic. A failure at any step will ruin everything. That's just basic cause and effect. It's easy for a good plan to fall apart. Therefore, a plan that has no attachment to logic cannot be stopped. The success or failure of any step will have no impact on the macro level.

It's not reasonable to love people who are only going to die.

Occam's Razor is a term plagiarized by the fact it is not easy to find its source and meaning. My attempts to find an author lead me nowhere, and I can only find unsatisfactory descriptions of how it works. Therefore, it is meaningless to me and I will use it as a placeholder to define:That which is unnecessary tends to be false.Necessity is by purpose.Therefore, purpose writes itself.Now, I have a tool.

When you're alone, you harbour one hundred percent all of the good things. But this also means that you harbour all the bad things. I learnt my own goals slowed down when I was with others, but having shared the good things, sharing the pain, having that friendship excelled what I alone couldn't do. It doesn't need to be logical, friendships are a part of life, and when is that logical? Life doesn't make sense, but you don't have to live it alone.

Logic rests on the axiom that existence exists. Logic is the art of non-contradictory identification.

If philosophy has to serve some really noble purpose, it must be more observant than critical towards life.

But if they are shown to be, and are the works not of men but of God, why are the unbelievers so irreligious as not to recognize the Master Who did them?

Questions don't have to make sense, Vincent," said Miss Susan. "But answers do.

It is from their foes, not their friends, that cities learn the lesson of building high walls

People will hold an opinion because they want to keep the company of others who share the opinion, or because they think it is the respectable opinion, or because they have publicly expressed the opinion in the past and would be embarrassed by a “U-turn,” or because the world would suit them better if the opinion were true, or . . . Perhaps it is better to get on with your family and friends, to avoid embarrassment, or to comfort yourself with fantasies than to believe the truth. But those who approach matters in this way should give up any pretensions to intellectual seriousness. They are not genuinely interested in reality.

Yet I must tell you, that all these graces which are expressed by passions of sorrow, fear, joy, hope, love, are not so certainly to be tried by the passion that is in them, as by the will that is either contained in them, or supposed in them; not as acts of the sensitive, but of the rational appetite (358).

Using the scientific knowledge that we currently possess, we can take simple logical steps, backed by the strongest evidence that we have, to come to the best and most reasonable conclusion that God is the cause of everything - all without ever taking even a single step of blind faith.

How do you feel right now?" "I hurt like hell.""You'll feel worse tomorrow.""So?""So, better get a jump on this while you still feel...not as bad.""What kind of logic is that?" I retorted.

The world of being is unchangeable, rigid, exact, delightful to the mathematician, the logician, the builder of metaphysical systems, and all who love perfection more than life. The world of existence is fleeting, vague, without sharp boundaries, without any clear plan or arrangement, but it contains all thoughts and feelings, all the data of sense, and all physical objects, everything that can do either good or harm, everything that makes any difference to the value of life and the world. According to our temperaments, we shall prefer the contemplation of the one or of the other.

My heart pounded annoyingly in my ears, and it was getting harder to stay focused. I'd almost gotten trapped in here, and now I'd come back. Sometimes I did have truly terrible ideas.

There's a weird logic that explains a common truth.

[The laws of logic] were placed in our minds by the Creator during the act of creation. We speak because God has spoken. God is not the author of confusion, irrationality, or the absurd. Furthermore, his words are meant to be understood by his creatures, and a necessary condition for his creature's understanding of those words is that they are intelligible and not irrational.

How can we satisfy ourselves without going on in infinitum? And, after all, what satisfaction is there in that infinite progression? Let us remember the story of the Indian philosopher and his elephant. It was never more applicable than to the present subject. If the material world rests upon a similar ideal world, this ideal world must rest upon some other; and so on, without end. It were better, therefore, never to look beyond the present material world.

it seems that once again people engage in a search for evidence that is biased toward confirmation. Asked to assess the similarity of two entities, people pay more attention to the ways in which they are similar than to the ways in which they differ. Asked to assess dissimilarity, they become more concerned with differences than with similarities. In other words, when testing a hypothesis of similarity, people look for evidence of similarity rather than dissimilarity, and when testing a hypothesis of dissimilarity, they do the opposite. The relationship one perceives between two entities, then, can vary with the precise form of the question that is asked

My head is a prison I’ve been locked in from the start,So if I'm treated like a criminal I might as well play the part.(attrib: E. Tancarville)

Logic only gives man what he needs,” he stammered. “Magic gives him what he wants.

Statements don't exist by themselves. Just like people, they are in relationship with one another.

The last thing Scripture should do is make you blind in the world. Instead, you hear everything, see everything, and feel everything because everything just so happens to point right back to it.

Everything has to come to an end, sometime.

For wicked people to do evil requires money, and good people superstition. Combining these elements gives us organized religion, but to achieve the worst of all evil conflate politics to the compound and the tragedies are endless.

There are crimes of passion and crimes of logic. The boundary between them is not clearly defined.

Music enables mind to compose things in the outer limit of logic.

Affronts to her reputation pierced her to the heart, though I couldn’t understand why, since she had very little character left to defend.

Mythology was never designed to describe historically verifiable events that actually happened. It was an attempt to express their inner significance or to draw attention to realities that were too elusive to be discussed in a logically coherent way.

To think or not to think? That is the new question.

Logically, I understand that it wasn't Edward's fault my family fell apart after he left. But when you're eleven years old, you don't give a flip about logic. You just really miss holding your big brother's hand.

I have often had a retrospective vision where everything in my past life seems to fall with significance into logical sequence.

There are just some things that are outside of comprehension, even if we can quantify them. At some point, science becomes magic.

I think about stories and their logic and wonder if there can be any such thing as simply "there is a book.

There were no footmarks.''Meaning that you saw none?''I assure you, sir, that there were none.''My good Hopkins, I have investigated many crimes, but I have never yet seen one which was committed by a flying creature. As long as the criminal remains upon two legs so long must there be some indentation, some abrasion, some trifling displacement which can be detected by the scientific searcher.

If one man challenges a statement and another cannot prove it, it does not necessarily follow that the statement is false.

Reason like a sphere? What type of reasoning does a wooden sphere do?""The circular type, I should think. And, by coincidence, it is my favorite type as well. Perhaps that's why I'm so good at the game.

Philosophy is easy... who on the fucking world has said that it's easy... it's not about logic... but and aboutnon logic... once enable logic... once and forever non logic is state disable.

What do you think science is? There's nothing magical about science. It is simply a systematic way for carefully and thoroughly observing nature and using consistent logic to evaluate results. Which part of that exactly do you disagree with? Do you disagree with being thorough? Using careful observation? Being systematic? Or using consistent logic?

Words, they say, are the food of minds. But, like other foods, they can do little by themselves.

Put a man on the brink of the abyss and - in the unlikely event that she doesn't fall into it - he will become a mystic or a madman... Which is probably the same thing!

For a Westerner, it is usually sufficient for a proposition to be logically sound. For a Chinese it is not sufficient that a proposition be logically correct, but it must be at the same time in accord with human nature.

A truth that's told with bad intentBeats all the lies you can invent.

A singer can shatter glass with the proper high note," he said, "but the simplest way to break glass is simply to drop it on the floor.

Language disguises thought.

For desired conclusions, we ask ourselves, "Can I believe this?", but for unpalatable conclusions we ask, "Must I believe this?

When exercising gifted will-power, move boldly without hesitation. The reward for such decisiveness is increased confidence in what the heart knows, which the mind does not feel

The pessimist reason that things just happen, where the optimist believe that things happen for a reason.

There can never be surprises in logic.

Reason is an outcome of frailty and resentment. When Will fails to cope with the labour of life, or the life of labour, its fragile remnants are set to construct a slighter world of justifications.

There's more to logic than identifying logical fallacies.

She had been too well-trained to allow her emotions to take control of her at the time, but the feelings were too strong to quietly recede into a regimen of critical thought. Deep inside her they stewed, logic and reason slowly boiling off. Reduced to their essence, her feelings became more potent, condensed into an emotional certainty. I should have saved them.

If a fact does not modify your logic on being known, either you don't believe the fact or it is not a fact.

Most of the mistakes in thinking are inadequacies of perception rather than mistakes of logic.