Quotes About Logic

The very essence of rationalism is that it assumes that the reason is the highest faculty in man and the lord of all the rest.

A proof is that which convinces a reasonable man; a rigorous proof is that which convinces an unreasonable man.

Human reason is like a drunken man on horseback; set it up on one side, and it tumbles over on the other

Man is not a rational animal, he is a rationalizing animal.

The machine has no feelings, it feels no fear and no hope ... it operates according to the pure logic of probability. For this reason I assert that the robot perceives more accurately than man.

Man must not rely on pure reason; he must mix faith with it.

But with man the case is otherwise, in that when logic leads to any humiliating conclusion, the sole effect is to discredit logic.

All men have a reason, but not all men can give a reason.

Reasoning will never make a man correct an ill opinion, which by reasoning he never acquired

After all, man is a complicated being, why should he be explainable by logic?

Say first, of god above or man below; what can we reason but from what we know.

Men prosper or fail, survive or perish in proportion to the degree of their rationality.

A rational man knows-or makes it a point to discover-the source of his emotions, the basic premises from which they come.

No concept man forms is valid unless he integrates it without contradiction into the sum of his knowledge.

Thomas Aquinas states parenthetically, as something entirely obvious, that men are more rational than women. For my part, I see no evidence of this.

The motivations of men. They never make sense. And they always make sense.

Men are handicapped when it comes to arguing, 'cause we have a need to make sense.

If logic was anything, all men would ride sidesaddles.

Men have no right to what is not reasonable, and to what is not for their benefit.

When a wise man chooses a sane basis for his arguments, it is no great task to speak well.

Men never desire anything very eagerly which they desire only by the dictates of reason.

When learned men begin to use their reason, then I generally discover that they haven't got any.

Obviously if any actions, even a lunatic's, can be causeless, determinism is done for. If the chain of causation can be broken for a madman, it can be broken for a man.

Reason is the main resource of man in his struggle for survival.