All true are not truthful.

Logic is essentially a tool for getting at truth; it is the tool, for without it no reasoning is possible in any field of…

— David Oderberg

If we were to expect the unexpected, then the unexpected would become expected, so we might as well say expect the expected, but then…

— Anonymous

“When dealing with people, remember you are not dealing with creatures of logic, but with creatures bristling with prejudice and motivated by pride and…

— Dale Carnegie

“What you owe your critics are your RESULTS not explanations not defence just RESULTS.Evidence terminates Arguments.”

— Fela Durotoye

Just between you and me, shouldn’t the World Bank be encouraging MORE migration of the dirty industries to the LDCs [Less Developed Countries]?... I…

— Lawrence Summers

Both fact and logic seem to me to support the view that savings invested in privately owned economic tools of production amount to an…

— F. A. Harper

Companies are not charitable enterprises: They hire workers to make profits. In the United States, this logic still works. In Europe, it hardly does.

— Paul Samuelson

“Religion, like science, is only noteworthy when it emphasizes a matter of what is true rather than whose belief is greater or lesser or…

— Criss Jami

Trying to understand the way nature works involves a most terrible test of human reasoning ability. It involves subtle trickery, beautiful tightropes of logic…

— Richard P. Feynman

The dialectic is neither fiction nor mysticism, but a science of the forms of our thinking insofar as it is not limited to the…

— Leon Trotsky

In presenting a mathematical argument the great thing is to give the educated reader the chance to catch on at once to the momentary…

— John Edensor Littlewood

As far as I know, the question of whether and how it could be strategically or morally justified was never the subject of open…

— Anonymous

Humans suffer from self-centred notions as to the nature of life. Humans assume that alien life forms should conform to standards that match our…

— Steve Perry

Intuitionists think that there are cases in which, say, some identity statement between real numbers is neither true nor false, even though we know…

— Richard F. Heck

There's a simple arithmetical logic at work. Build more unaffordable and not always architecturally sympathetic apartments, watch the rents rise, the tarts leave, the…

— Howard Jacobson