Quotes About Logic

Insanity is often the logic of an accurate mind overtasked. Good mental machinery ought to break its own wheels and levers, if any thing is thrust among them suddenly which tends to stop them or reverse their motion. A weak mind does not accumulate force enough to hurt itself; stupidity often saves a man from going mad.

Arithmetic is numbers you squeeze from your head to your hand to your pencil to your paper till you get the answer.

There is no prophet that preaches the superpersonal God more plainly than mathematics...

We know that mathematicians care no more for logic than logicians for mathematics. The two eyes of exact science are mathematics and logic: the mathematical sect puts out the logical eye, the logical sect puts out the mathematical eye; each believing that it sees better with one eye than with two. The consequences are ludicrous.

You may be an engineer if your idea of good interpersonal communication means getting the decimal point in the right place.

Pure mathematics is the magician's real wand.

Philosophy is common sense in a dress suit.

...the point of philosophy is to start with something so simple as not to seem worth stating, and to end with something so paradoxical that no one will believe it.

The want of logic annoys. Too much logic bores. Life eludes logic, and everything that logic alone constructs remains artificial and forced. Therefore is a word the poet must not know, which exists only in the mind.

Passion and prejudice govern the world; only under the name of reason.

Proverbs are the literature of reason.

There's no logical reason to put pumpkin in a cup of coffee.

Religion seems to have a way of making people abandon logic.

The door to safety swings on the hinges of common sense.

Physics is geometric proof on steroids.

If Passion drives, let Reason hold the Reins.

DAWN, n. The time when men of reason go to bed.

Are you suggesting coconuts migrate?

The modern superstition is that we're free of superstition.

to know that an inference is deductively valid is to know that there are no situations in which the premisses are true and the conclusion is not.

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.

This book is an introduction to logic, as contemporary logicians now understand the subject. It does not attempt to be a textbook, however.

I know what you are thinking about', said Tweedledum: 'but it isn't so, nohow.' '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.

In my work you often get an abrupt shift in time, a jolt. But the emotional logic will take the reader on. I hope. I trust. After all, our memories do not work with any sequential logic.