Quotes About Logic

Ask the experimenters why they experiment on animals, and the answer is: "Because the animals are like us." Ask the experimenters why it is morally okay to experiment on animals, and the answer is: "Because the animals are not like us." Animal experimentation rests on a logical contradiction.

Truly, that reason upon which we plume ourselves, though it may answer for little things, yet for great decisions is hardly surer than a toss-up.

Few persons care to study logic, because everybody conceives himself to be proficient enough in the art of reasoning already. But I observe that this satisfaction is limited to one's own ratiocination, and does not extend to that of other men.

The elements of every concept enter into logical thought at the gate of perception and make their exit at the gate of purposive action; and whatever cannot show its passports at both those two gates is to be arrested as unauthorized by reason.

In the battle between Kronecker and Cantor, Cantor would ultimately prevail. Cantor's theory would show that Kronecker's precious integers-and even the rational numbers-were nothing at all. They were an infinite zero.

Love was even more mathematical than poetry. It was the pure mathematics of the spirit.

One cannot always approach truth through reason; it confines us to a geometric cast of thought that calls for logic and credibility. We see the dead in our dreams and accept them as living, knowing at the same time they are dead. And although this dream mind is without reason, has it not its own credibility?

But reason has no power against feeling, and feeling older than history is no light matter.

The heart feels, the head compares ? ?????? ??????????. ? ???? ????????? Translation by Irene Doura-Kavadia

By the Middle Ages… the introduction of the Trivium was well-known: SÂDI, an educated black from Tombouctou, author of the well-known work entitled, 'Tarikh es-Soudan' cites amongst the subjects that he mastered, logic, dialection, grammar, rhetoric, not to mention law and other disciplines...the long lists of subjects studied and the lettered African intellectuals who taught them at the University of Tombouctou…

there are no fruitful speculations outside of reality.

I'd never had a mind for math. ... It was a logic that made little sense to me. In my perception, the world wasn't a graph or a formula or an equation. It was a story.

I'd never had a mind for math. I simply couldn't hold the formulas and numbers in my head. It was a logic that made little sense to me. In my perception, the world wasn't a graph or formula or an equation. It was a story.

I wonder if there is such a thing in nature as a FAT MIND? I really think I have met with one or two: minds which could not keep up with the slowest trot in conversation; could not jump over a logical fence, to save their lives; always got stuck fast in a narrow argument; and, in short, were fit for nothing but to waddle helplessly through the world.

The time to begin writing an article is when you have finished it to your satisfaction. By that time you begin to clearly and logically perceive what it is that you really want to say.

Criminal Minds, False Flag: "When you eliminate the impossible, whatever remains, no matter how improbable, must be the truth."

Mathematics as an expression of the human mind reflects the active will, the contemplative reason, and the desire for aesthetic perfection. Its basic elements are logic and intuition, analysis and construction, generality and individuality.

There are reasons for everything we do.

Reason has an elder sister, never forget that. She's called Intuition.

When the bird of the heart begins to sing, too often will reason stop up her ears.

Analysis of error begins with analysis of language.

There is no logical necessity for the existence of a unique direction of total time; whether there is only one time direction, or whether time directions alternate, depends on the shape of the entropy curve plotted by the universe.

The institution of a State is praxeologically incompatible with private property and private property based enterprise. It is the very anti-thesis of private property, and any proponent of private property and private enterprise then must, as a matter of logic, be an anarchist.

Empirical evidence, however, has little effect on irrational belief.