915 Quotes About Logic

It does bear emphasis that slippery-slope arguments are notoriously invalid.

How is logic like a machine? Here is how one logician explained it around the turn of the twentieth century: "As a material machine is an instrument for economising the exertion of force, so a symbolic calculus is an instrument for economising the exertion of intelligence." Logic, just like a machine, was a tool for democratizing force: built with enough precision and skill, it could multiply the power of the gifted and the average alike.

All people, whether Aspie or neuro-typical are predisposed by their society to make guesses, jump to conclusions and then seek to defend those conclusions, regardless of logic or changing circumstance. This is sloppy, illogical thinking which may not hinder your life too much, under normal circumstances. But if you want to be a great detective, then such thinking will absolutely ruin your chances.

Reasonable doubt trumps everything.

Definitions are the foundation of reason. You can’t reason without them.

Paradoxes are less paradoxical in their reference to truth than most of the most plausible axioms.

Life corrects the errors of logic.

Mary Ellen was also a woman of logic. But her logic dictated that if all evidence seemed to point to magic, then it would be unwise, logically to discount it.

The lack of logic in magic is tragic.