Quotes About Logic

Analogies drawn from the inspection of hen's eggs foundered on the objection that man was not a chicken.

But reason was helpless against demagogy.

Fomenko was a classic conspiracy theorist: he proved his assertions by way of relentlessly logical constructions based on random mathematical assumptions, and he dismissed all contrary evidence as falsification by his enemies.

All that determinists are asking you to accept is that there cannot be effect without cause.

It's no good, you'll never outrun a bear," says the logical friend.

Just as in logic a thing cannot be and not be at the same time, in moral reasoning identical creatures cannot be worthy of moral consideration and unworthy of moral consideration; this dog or dolphin or elephant morally significant and those others are not.

Having granted some protections to some animals, we are constantly confronted with the logic of our own laws, troubled by perfectly rational connections between the random or wanton acts of cruelty" the law forbids and the systematic, institutional cruelties it still permits.

Having granted some protections to some animals, we are constantly confronted with the logic of our own laws, troubled by perfectly rational connections etween the random or wanton acts of cruelty the law forbids and the systematic, institutional cruelties it still permits.

The simplest answer is that scientific management fulfilled too many hopes and prayers to be ignored merely on account of its logical and factual deficiencies.

There was the thing about romantic feelings- the sensation was incredible, like a warm flood through every highway and byway of her body. Every good chemical she could produce turned up, like some bountiful harvest. But the feelings and chemicals blocked out everything else. They dulled logic and sense and focus. They made everything else seem irrelevant and time started to move jerkily too fast, then too slow

This, in every hour and every issue, is your basic moral choice: thinking or non-thinking, existence or non-existence, A or non-A, entity or zero.

Reason is the most naive of all superstitions.

Any refusal to recognize reality, for any reason whatever, has disastrous consequences. There are no evil thoughts except one: the refusal to think.

Opinion without a rational process.

Reason functions by integrating perceptual data into concepts.

I want you to observe...that those who cry the loudest about their disillusionment, about the failure of virtue, the futility of reason, the impotence of logic—are those who have achieved the full, exact, logical result of the ideas they preached, so mercilessly logical that they dare not identify it.

Of course I'm all right, professor. I had to be. A is A.- John Galt

I win by means of nothing but logic and I surrender to nothing but logic. I do not surrender my reason or deal with men who surrender theirs. I have nothing to gain from fools or cowards; I have no benefits to seek from human vices: from stupidity, dishonesty or fear.

To the extent to which a man is rational, life is the premise directing his actions. To the extent to which he is irrational, the premise directing his actions is death.

I do not care to be admired causelessly, emotionally, intuitively, instinctively—or blindly. I do not care for blindness in any form, I have too much to show—or for deafness, I have too much to say. I do not care to be admired by anyone's heart—only by someone's head.

The source of work? Man's mind...man's reasoning mind.

From this simplest necessity to the highest religious abstraction, from the wheel to the skyscraper, everything we are and everything we have comes from a single attribute of man—the function of his reasoning mind.

Quieres saber qué está mal en el mundo? Todos los desastres que han asolado al mundo provinieron del intento de los líderes de ignorar el hecho de que A es A.

Reason is not automatic. Those that deny it cannot be conquered by it.