Logic Quotes

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The subtleties of mathematics defecate the grossness of our apprehension, and supply the elements of a sounder and severer logic.

In mathematics, logic, linguistics, and other abstract disciplines, the systems are not assigned to objects. They are defined by an enumeration of the variables, their admissible values, and their algebraic, topological, grammatical, and other properties which, in the given case, determine the relations between the variables under consideration.

Great virtues may draw attention from defects, they cannot sanctify them. A pebble surrounded by diamonds remains a common stone, and a diamond surrounded by pebbles is still a gem. No one should attempt to refute an argument by pronouncing the name of some man, unless he is willing to adopt all the ideas and beliefs of that man. It is better to give reasons and facts than names. An argument should not depend for its force upon the name of its author. Facts need no pedigree, logic has no heraldry, and the living should not awed by the mistakes of the dead.

Robert G. Ingersoll

The laws of logic do not prescribe the way our minds think; they prescribe the way our minds ought to think.

Arthur Eddington

Prediction had become a privilege now lost to her. Never mind the outside world, she could not even guess her own actions, or the course of her thoughts.
Was this the true nature of emotion? she wondered. The great defier of logic, of control—the whims of being human. What lay ahead?

If it was as logical as that, I wouldn't continue to feel as bad as I do. I know what you're saying, and you're absolutely right in a way. But logic and rationality only go so far. Then you know what happens? Ha! Then your heart adds its two cents and everything reasonable goes right-out-the-window.

Jonathan Carroll

Each experience of love nudges us toward the Story of Interbeing, because it only fits into that story and defies the logic of Separation.

Charles Eisenstein

You can define a net two ways, depending on your point of view. Normally you would say it is a meshed instrument designed to catch fish. But you could, with no great injury to logic, reverse the image and define the net as a jocular lexicographer once did: he called it a collection of holes tied together with string.

Music trains the mind, like mathematics, or logic, to precision of mind.

Guy Gavriel Kay

We think that we are reading nature by applying rules of logic and laws of matter to our observations. But we are often telling stories—in the good sense, but stories nevertheless.

Stephen Jay Gould

Dialectical logic is loyal to the contradictions, not by the reasoning of on the one hand and the other but by tracing the contradictions to their fractured source.

Despite the roar of voices wanting to equate strategy with ambition, leadership, vision, planning, or the economic logic of competition, strategy is none of these. The core of strategy work is always the same: discovering the critical factors in a situation and designing a way of coordinating and focusing actions to deal with those factors.

To a person in love, the value of the individual is intuitively known. Love needs no logic for its mission.

Charles Lindbergh

The preference for [the term] 'queer' represents, among other things, an aggressive impulse of generalizations; it rejects a minoritizing logic of toleration or simple political interest-representation in favor of a more thorough resistance to regimes of the normal.... For both academics and activists, 'queer' gets a critical edge by defining itself against the normal rather than the heterosexual.... The insistence on 'queer'... has the effect of pointing out a wide field of normalization, rather than simple intolerance, as the site of violence.

Granny intimated boldly, basing her logic on God's justice, that one sinful person in a household could bring down the wrath of God upon the entire establishment, damning both the innocent and the guilty, and on more than one occasion she interpreted my mother's long illness as the result of my faithlessness.

Knowledge is awareness, and to it there are many paths, not all of them paved with logic.

The characters have their own lives and their own logic, and you have to act accordingly.

Isaac Bashevis Singer

From the point of view of logic, my report on 'Exclusion principle and quantum mechanics' has no conclusion. I believe that it will only be possible to write the conclusion if a theory will be established which will determine the value of the fine structure constant and will thus explain the atomistic structure of electricity, which is such an essential quality of all atomic sources of electric fields actually occurring in nature.

Now don't ask me why I said that; it just came out. Somewhere in the recesses of my mind; quite beyond logic. But, there it is.

No legal plunder: This is the principle of justice, peace, order, stability, harmony, and logic. Until the day of my death, I shall proclaim this principle with all the force of my lungs (which alas! is all too inadequate).

Frédéric Bastiat

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

The gods released a vision on a world forespent and dull;
They sent it as a challenge by the sea hawk and the gull. It roused the Norman eagerness, the Albion cliffs turned red:
You fly the wings of logic — can you fly the wings of lead?

No deeply-rooted tendency was ever extirpated by adverse argument. Not having originally been founded on argument, it cannot be destroyed by logic.

George Henry Lewes

Just because you know a thing is true in theory, doesn't make it true in fact. The barbaric religions of primitive worlds hold not a germ of scientific fact, though they claim to explain all. Yet if one of these savages has all the logical ground for his beliefs taken away — he doesn't stop believing. He then calls his mistaken beliefs 'faith' because he knows they are right. And he knows they are right because he has faith. This is an unbreakable circle of false logic that can't be touched. In reality, it is plain mental inertia. A case of thinking 'what always was' will also 'always be.' And not wanting to blast the thinking patterns out of the old rut.

Women do not think with logic and discretion but with emotions of the heart

Cassandra Clare