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Logic Quotes

What I'd like to read is a scientific review, by a scientific psychologist--if any exists--of 'A Sci...

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It is often argued that religion is valuable because it makes men good, but even if this were true i...

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There is hardly a better way to avoid discussion than by releasing an argument from the control of t...

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Experience cannot beat logic, and interpretations of observational evidence which are not in line wi...

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Hans-Hermann HoppeThe Economics and Ethics of Private Property: Studies in Political Economy and Philosophy

But still," Ayumi said, "it seems to me that this world has a serious shortage of both logic and kin...

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The philosophers make still another objection: "What you gain in rigour," they say, "you lose in obj...

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Pure analysis puts at our disposal a multitude of procedures whose infallibility it guarantees; it o...

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In the end, he had to admit, he didn't really understand her. He didn't understand women. He didn't ...

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Our knowledge springs from two fundamental sources of our mind; the first is to receive representati...

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It will be seen how there can be the idea of a special science, the *critique of pure reason* as it ...

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I, on the other hand, am a finished product. I absorb electrical energy directly and utilize it with...

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How often people speak of art and science as though they were two entirely different things, with no...

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Which came first, the phoenix or the flame?”"...I think the answer is that a circle has no beginning...

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J. K. RowlingHarry Potter and the Deathly Hallows

...what about the stone, Mr Lovegood? The thing you call the Resurrection Stone?""What of it?""Well,...

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... Desire baffles knowledge and power.

One can ask why the I has to appear in the cogito {Descartes’ argument “I think therefore I am.}, si...

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I believed that it might be pulling these different impressions of itself from my mind and projectin...

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I am a cuddly atheist... I am against creationism being taught in schools because there is empirical...

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You have a visitor, my lord." I frowned, "What?" "That is why I came in here. You have a visitor wai...

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I hate those Socratic dialogues where everything gets drawn out at the pace of an excessively logica...

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Logically, I understand that it wasn't Edward's fault my family fell apart after he left. But when y...

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If we take reason strictly, the perceiving of spiritual beauty and excellence no more belongs to rea...

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It is useless to attempt to reason a man out of a thing he was never reasoned into.

It is better to debate a question without settling it than to settle a question without debating it.

He had a better mind and a more rigorous temperament than me; he thought logically, and then acted o...

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Logic is the science of the justification of conclusions we have reached by natural reasoning. My po...

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Julian JaynesThe Origin of Consciousness in the Breakdown of the Bicameral Mind

Mythology was never designed to describe historically verifiable events that actually happened. It w...

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When you kill a man, You steal a life. You steal his wife's right to a husband, Rob his children of ...

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Khaled HosseiniThe Kite Runner

Everything has to come to an end, sometime.

Picture of L. Frank Baum
L. Frank BaumThe Marvelous Land of Oz

How very wet this water is.

Picture of L. Frank Baum
L. Frank BaumThe Marvelous Land of Oz

For I consider brains far superior to money in every way. You may have noticed that if one has money...

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L. Frank BaumThe Wonderful Wizard of Oz

Cursed luck! —said he, biting his lip as he shut the door, —for man to be master of one of the fines...

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Laurence SterneThe Life and Opinions of Tristram Shandy

It's hard to imagine a more extraordinary claim than that some hidden intelligence created a univers...

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The saddest thing about these imagined deathbed conversions is that, even if they were real, they co...

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Logic is the beginning of wisdom, not the end.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect w...

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Contrariwise,' continued Tweedledee, 'if it was so, it might be; and if it were so, it would be; but...

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Lewis CarrollAlice's Adventures in Wonderland & Through the Looking-Glass

For a Westerner, it is usually sufficient for a proposition to be logically sound. For a Chinese it ...

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In contrast to logic, there is common sense, or still better, the Spirit of Reasonableness.

But all propositions of logic say the same thing. That is, nothing.

Don't get involved in partial problems, but always take flight to where there is a free view over th...

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The logic of the world is prior to all truth and falsehood.

There can never be surprises in logic.

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Ludwig WittgensteinTractatus Logico-Philosophicus

The gramophone record, the musical thought, the score, the waves of sound, all stand to one another ...

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The solution of logical problems must be neat for they set the standard of neatness.

It used to be said that God could create anything except what would be contrary to the laws of logic...

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Picture of Ludwig Wittgenstein
Ludwig WittgensteinTractatus Logico-Philosophicus

Language disguises thought.

Roughly speaking: to say of two things that they are identical is nonsense, and to say of one thing ...

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His mind was logical, but his traitorous heart stuttered from beat to beat.

The person who wishes to attain human perfection should study logic first, next mathematics, then ph...

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The third preliminary problem for every theory of reality is that of the experience of transcendence...

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It is very important to note that the transcendence of the object is by no means a primitive compone...

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What is gained by the transcendence of the object is the identifiability of the object in a pluralit...

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It is precisely because the principle of the transcendence of the object is completely independent o...

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Kids didn't have huge backpacks when I was their age. We didn't have backpacks at all. Now it seemed...

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The logic is often far-fetched - how does medical marijuana affect interstate commerce? - and some c...

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The bubble logic driving tulipomania has since acquired a name: “the greater fool theory.” Although ...

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Michael PollanThe Botany of Desire: A Plant's-Eye View of the World

Religious faith depends on a host of social, psychological and emotional factors that have little or...

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For Paley, a watch is purposeful and thus must have been created by a being with a purpose. A watch ...

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Michael ShermerWhy People Believe Weird Things: Pseudoscience

The television commercial has mounted the most serious assault on capitalist ideology since the publ...

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Neil PostmanAmusing Ourselves to Death: Public Discourse in the Age of Show Business

Exposition is a mode of thought, a method of learning, and a means of expression. Almost all of the ...

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Picture of Neil Postman
Neil PostmanAmusing Ourselves to Death: Public Discourse in the Age of Show Business

I am convinced that the act of thinking logically cannot possibly be natural to the human mind. If i...

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Neil deGrasse TysonThe Sky Is Not the Limit: Adventures of an Urban Astrophysicist

One of the difficulties in raising public concern over the very severe threats of global warming is ...

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Hope is independent of the apparatus of logic.

Insanity is often the logic of an accurate mind overtasked

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Oliver Wendell Holmes, Sr.Autocrat of the Breakfast Table

It’s whatever the majority deems it to be. It’s not necessarily the best or the most logical, but it...

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Paulo CoelhoVeronika Decides to Die

It's difficult to know where to begin, sir.''Yes, the beginning is the tricky part. But perhaps ther...

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It is one of the greatest Curses visited upon Mankind, he told me, that they shall fear where no Fea...

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Everybody knows that Aristotelian two-value logic is fucked.

A mind all logic is like a knife all blade. It makes the hand bleed that uses it.

If scientific reasoning were limited to the logical processes of arithmetic, we should not get very ...

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I suppose therefore that all things I see are illusions; I believe that nothing has ever existed of ...

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And thus, the actions of life often not allowing any delay, it is a truth very certain that, when it...

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Yet I must tell you, that all these graces which are expressed by passions of sorrow, fear, joy, hop...

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Consideration doth, as it were, open the door between the head and the heart: the understanding havi...

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Mathematics as an expression of the human mind reflects the active will, the contemplative reason, a...

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Richard CourantWhat Is Mathematics?: An Elementary Approach to Ideas and Methods

His was not a small mind bothered by logic and consistency.

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Robert A. HeinleinStranger in a Strange Land

For millennia philosophers and saints have tried to reason out a logical scheme for the universe... ...

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Robert A. HeinleinThe Cat Who Walks Through Walls

Definitions are the foundation of reason. You can’t reason without them.

Picture of Robert M. Pirsig
Robert M. PirsigZen and the Art of Motorcycle Maintenance: An Inquiry Into Values

If you can’t define something you have no formal rational way of knowing that it exists. Neither can...

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Robert M. PirsigZen and the Art of Motorcycle Maintenance: An Inquiry Into Values

Now we’ve a real intellectual impasse. Our reason, which is supposed to make things more intelligibl...

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Robert M. PirsigZen and the Art of Motorcycle Maintenance: An Inquiry Into Values

The real purpose of the scientific method is to make sure Nature hasn't misled you into thinking you...

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Robert M. PirsigZen and the Art of Motorcycle Maintenance: An Inquiry Into Values

There is room for words on subjects other than last words.

The self is the class (not the collection) of the experiences (or autopsychological states). The sel...

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Rudolf CarnapThe Logical Structure of the World and Pseudoproblems in Philosophy

Logic is the last scientific ingredient of Philosophy; its extraction leaves behind only a confusion...

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If reason ruled the world would history even exist?

Becoming a part of a movement doesn't help anybody think clearly.

Needless to say, there are people who hate Arabs, Somalis, and other immigrants from predominantly M...

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If someone doesn't value evidence, what evidence are you going to provide to prove that they should ...

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As many critics of religion have pointed out, the notion of a creator poses an immediate problem of ...

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Faith is the mortar that fills the cracks in the evidence and the gaps in the logic, and thus it is ...

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Picture of Sam Harris
Sam HarrisThe End of Faith: Religion

When a man in a forest thinks he is going forward in a straight line, in reality he is going in a ci...

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Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.

Logic is like the sword--those who appeal to it shall perish by it.