Certain Quote by Ludwig Wittgenstein

Propositions show what they say: tautologies and contradictions show that they say nothing.

— Ludwig Wittgenstein

Two truths cannot contradict one another.

— Anonymous

“Tautology and contradiction are, however, not senseless; they are part of the symbolism, in the same way that “0” is part of the symbolism…

— Ludwig Wittgenstein

Contradiction itself, far from always being a criterion of error, is sometimes a sign of truth.

— Simone Weil

There are no contradictions in truth.

— Nicholas Zounis

“In one of the earlier Sherlock Holmes mysteries, Arthur Conan Doyle (not yet a Sir) made an observation on logical deduction. When you have…

— Peter Clines

Truth is that which cannot be proved false.

— Dick Morris

“Logic is the art of non-contradictory identification. A contradiction cannot exist. No concept man forms is valid unless he integrates it without contradiction into…

— Ayn Rand

What is not surrounded by uncertainty cannot be the truth.

— Richard P. Feynman

There are also two kinds of truths: truth of reasoning and truths of fact. Truths of reasoning are necessary and their opposite is impossible;…

— Gottfried Leibniz

Fact is not truth, but a poet who wilfully defies fact cannot achieve truth.

— Robert Graves

It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth.

— Arthur Conan Doyle