Logic Quotes

From a drop of water, a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other.

Logic

• Water

Logic is logic. That's all I say.

Logic

• Logic

Metaphysics may be, after all, only the art of being sure of something that is not so, and logic only the art of going wrong with confidence.

Logic

• Art
• May
• Confidence

Logic is a large drawer, containing some useful instruments, and many more that are superfluous. A wise man will look into it for two purposes, to avail himself of those instruments that are really useful, and to admire the ingenuity with which those that are not so, are assorted and arranged.

Logic

• Wise
• Logic

Pierce wrote as a logician and James as a humanist.

Logic

Logic is a systematic method of coming to the wrong conclusion with confidence.

Logic

• Confidence
• Logic

Logic is usually understood nowadays as a study of certain formal systems, though in former times there were philosophers who held that the subject matter of logic was the formal rules of human thought.

Logic

• Study
• Logic

Logician: A cat has four paws. Old Gentleman: My dog had four paws. Logician: Then it's a cat. Old Gentleman: So my dog is a cat? Logician: And the contrary is also true.

Logic

• True
• Dog
• Cat

Logic is a feeble reed, friend. 'Logic' proved that airplanes can't fly and that H-bombs won't work and that stones don't fall out of the sky. Logic is a way of saying that anything which didn't happen yesterday won't happen tomorrow.

Logic

• Work
• Friend
• Fall

Logic, like whiskey, loses its beneficial effect when taken in too large quantities.

Logic

• Taken
• Logic
• Whiskey

All men are mortal. Socrates was mortal. Therefore, all men are Socrates.

Logic

• Men

No, no, you're not thinking; you're just being logical.

Logic

• Thinking

Pure logic is the ruin of the spirit.

Logic

• Logic

As to the most prudent logicians might venture to deduce from a skein of wool the probable existence of a sheep; so you, from the raw stuff of perception, may venture to deduce a universe which transcends the reproductive powers of your loom.

Logic

• May
• Universe
• Perception

Logic: The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.

Logic

• Thinking
• Art
• Logic

It is by logic that we prove, but by intuition that we discover. To know how to criticize is good, to know how to create is better.

Logic

• Good
• Logic
• Intuition

Logic is in the eye of the logician.

Logic

• Logic

Logic is one thing and commonsense another.

Logic

• Logic

The want of logic annoys. Too much logic bores. Life eludes logic, and everything that logic alone constructs remains artificial and forced.

Logic

• Life
• Alone
• Logic

'Contrariwise,' continued Tweedledee, 'if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.'

Logic

• Logic

The pedant and the priest have always been the most expert of logicians-and the most diligent disseminators of nonsense and worse.

Logic

Logic is concerned with arguments, good and bad. With the docile and the reasonable, arguments are sometimes useful in settling disputes. With the reasonable, this utility attaches only to good arguments. It is the logician’s business to serve the reasonable. Therefore, in the realm of arguments, it is the logician who distinguishes good from bad.

Logic

• Good
• Business
• Bad

I have expos'd myself to the enmity of all metaphysicians, logicians, mathematicians, and even theologians; and can I wonder at the insults I must suffer?

Logic

• Wonder

Fuzzy logic is a logic whose distinguishing features are (i) fuzzy truth-values expressed in linguistic terms, e.g., true, very true, more or less true, or somewhat true, false, nor very true and not very false, etc2.; (2) imprecise truth tables; and (3) rules of inference whose validity is relative to a context rather than exact.

Logic

• Truth
• True
• Logic