Logic Quotes

In a mind all logic is like a knife blade. It makes the hand bleed that uses it.

Rabindranath Tagore

I've described my usual writing process as scrambling from peak to peak on inspiration through foggy valleys of despised logic. Inspiration is better when you can get it.

Lois McMaster Bujold

What we cannot express by the art of thinking, by the art of science or philosophy or logic, we can and should express by the poetic, visual, or some other arts.

Naum Gabo

Intuition is the supra-logic that cuts out all the routine processes of thought and leaps straight from the problem to the answer.

Robert Graves

As records of courts and justice are admissible, it can easily be proved that powerful and malevolent magicians once existed and were a scourge to mankind. The evidence (including confession) upon which certain women were convicted of witchcraft and executed was without a flaw; it is still unimpeachable. The judges' decisions based on it were sound in logic and in law. Nothing in any existing court was ever more thoroughly proved than the charges of witchcraft and sorcery for which so many suffered death. If there were no witches, human testimony and human reason are alike destitute of value.

Ambrose Bierce

They still believe in God, the family, angels, witches, goblins, logic, clarity, punctuation, and other obsolete stuff.

Isaac Bashevis Singer

People often say that humans have always eaten animals, as if this is a justification for continuing the practice. According to this logic, we should not try to prevent people from murdering other people, since this has also been done since the earliest of times.

Isaac Bashevis Singer

Consequently he who wishes to attain to human perfection, must therefore first study Logic, next the various branches of Mathematics in their proper order, then Physics, and lastly Metaphysics.


The nineteenth century was completely lacking in logic, it had cosmic terms and hopes, and aspirations, and discoveries, and ideals but it had no logic.

Gertrude Stein

Logic is one thing and Common Sense another.

Elbert Hubbard

An action doesn't have to be wrong just because it is not logical. It doesn't have to be right just because it has its logic.

Lion Feuchtwanger

The logic of words should yield to the logic of realities.

Louis D. Brandeis

When dealing with people, remember you are not dealing with creatures of logic, but creatures of emotion.

Dale Carnegie

Insanity is often the logic of an accurate mind overtasked

Oliver Wendell Holmes

Mathematics as an expression of the human mind reflects the active will, the contemplative reason, and the desire for aesthetic perfection. Its basic elements are logic and intuition, analysis and construction, generality and individuality.

Richard Courant
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