Quotes About Logic

It is through science that we prove, but through intuition that we discover.

Thus, in a sense, mathematics has been most advanced by those who distinguished themselves by intuition rather than by rigorous proofs.

When one tight end succeeds, everybody succeeds - like the tight ends were making under $10 million a year. To me that doesn't make any sense.

At the time, my personal research objectives were to provide Keynesian economics with more rigorous foundations and to tighten and elaborate the logic of macroeconomic and monetary theory.

The science of mathematics treats its object as though it were something abstracted mentally, whereas it is not abstract in reality.

consideres, quid tuae rationes postulent.

Alarm-based marketing logic often goes something like this: There is a limited quantity (scarcity). Unless you act now (urgency), you'll lose your opportunity (consequence). When crafting a message for an audience who is stuck in apathy or indecision, deadlines and consequences overcome inertia to create action.

There was no arguing with a man when he started saying thing like that -- using logic as a weapon.

Learn to talk honestly, truthfully, logically, ethically, and boldly.

[H]e had a strange sense of being haunted, a feeling that the shades of his imagination were stepping out into the real world, that destiny was acquiring the slow, fatal logic of a dream. 'Now I know what a ghost is,' he thought. 'Unfinished business, that's what.'

From the literary point of view, the Koran has little merit. Declamation, repetition, puerility, a lack of logic and coherence strike the unprepared reader at every turn. It is humiliating to the human intellect to think that this mediocre literature has been the subject of innumerable commentaries, and that millions of men are still wasting time in absorbing it." (Orpheus, Salmon Reinach, 1932. See page 175 of the book here)

If someone doesn't value evidence, what evidence are you going to provide to prove that they should value it? If someone doesn't value logic, what logical argument could you provide to show the importance of logic?

In problems of logic, contradictory statements cannot be true; in the psyche, only contradictions are true. Self-image and shadow are Siamese twins, and the psyche is equally formed by the conscious and unconscious. Whatever appears to be true on the surface is linked to an opposite truth beneath the surface. What you see is not what you get.

Simpler theories may be more convenient to work with, but they are not intrinsically more probable than complex ones.

According to many philosophers, there is a purely logical reason why science will never be able to explain everything. For in order to explain something, whatever it is, we need to invoke something else. But what explains the second thing?

He'd undertake to prove, by force Of argument, a man's no horse. He'd prove a buzzard is no fowl, And that a Lord may be an owl, A calf an Alderman, a goose a Justice, And rooks, Committee-men or Trustees.

All philosophies, if you ride them, are nonsense, but some are greater nonsense than others.

If you follow reason far enough it always leads to conclusions that are contrary to reason.

He could distinguish and divideA hair 'twixt south and southwest side,On either which he would dispute,Confute, change hands, and still confute.

And wisely tell what hour o' th' dayThe clock doth strike, by algebra.

He'd run in debt by disputation,And pay with ratiocination.

All philosophies, if you ride them home, are nonsense, but some are greater nonsense than others.

I have found you an argument; but I am not obliged to find you an understanding.

When speculation has done its worst, two and two still make four.