Logic is neither an art nor a science but a dodge
Stendhal
Nature cares nothing for logic, our human logic: she has her own, which we do not recognize and do not acknowledge until we are crushed under its wheel
Ivan Turgenev
Logic will get you from A to B. Imagination will take you everywhere.
Albert Einstein
Logic is the art of going wrong with confidence
Joseph Wood Krutch
...mathematics is distinguished from all other sciences except only ethics, in standing in no need of ethics. Every other science, even logic, especially in its early stages, is in danger of evaporating into airy nothingness, degenerating, as the Germans say, into an arachnoid film, spun from the stuff that dreams are made of. There is no such danger for pure mathematics; for that is precisely what mathematics ought to be.
Charles Sanders Peirce
There is more logic in humor than in anything else. Because, you see, humor is truth.
Victor Borge
Prejudices are rarely overcome by argument; not being founded in reason they cannot be destroyed by logic.
Tryon Edwards
Since my logic aims to teach and instruct the understanding, not that it may with the slender tendrils of the mind snatch at and lay hold of abstract notions (as the common logic does), but that it may in very truth dissect nature, and discover the virtues and actions of bodies, with their laws as determined in matter; so that this science flows not merely from the nature of the mind, but also from the nature of things.
Francis Bacon
The logic now in use serves rather to fix and give stability to the errors which have their foundation in commonly received notions than to help the search for truth. So it does more harm than good.
Francis Bacon
The principles of logic and mathematics are true simply because we never allow them to be anything else. And the reason for this is that we cannot abandon them without contradicting ourselves, without sinning against the rules which govern the use of language, and so making our utterances self-stultifying. In other words, the truths of logic and mathematics are analytic propositions or tautologies.
Sir Alfred Jules Ayer
Logic is a poor model of cause and effect.
Gregory Bateson
There is, then, a logical priority about the arrangements, and logic has nothing to do with time.
Anthony Stafford Beer
We have become blind to the alternatives to violence. This involves us in a sort of official madness, in which, while following what seems to be a perfect logic of self-defense and detterence, we commit one absurdity after another: We seek to preserve peace by fighting a war, or to advance freedom by subsidizing dictatorships, or to "win the hearts and minds of the people" by poisoning their crops and burning their villages and confining them in concentration camps; we seek to uphold the "truth" of our cause with lies, or to answer conscientious dissent with threats and slurs and intimidations. I have come to the realization that I can no longer imagine a war that I would believe to be either useful or necessary. I would be against any war.
Wendell Berry