Louis Pasteur Quotes

You can prove anything by mentioning another computer language.

Logic: The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.

Convincing yourself doesn't win an argument.

A statement is persuasive and credible either because it is directly self-evident or because it appears to be proved from other statements that are so.

The proof of a theory is in its reasoning, not in its sponsorship. The proof of a theory is in its reasoning, not in its sponsorship.

If there is one thing that I take pride in, it is the fact that I never, ever make a charge without offering a substantial amount of support for it. You may ultimately end up not agreeing with me, but you will have to concede that I offered much evidence in support of my position, something that people frequently do not do.

Logic is pointless.

If someone doesn’t value evidence, what evidence are you going to provide that proves they should value evidence. If someone doesn’t value logic, what logical argument would you invoke to prove they should value logic?

You can't assert an answer just because it's not something else.

Logic is the art of convincing us some truth.

Just because an idea is true doesn't mean it can be proved. And just because an idea can be proved doesn't mean it's true.

Proof by analogy is fraud.

A proof is a proof. What kind of a proof? It's a proof. A proof is a proof. And when you have a good proof, it's because it's proven.

Neither irony or sarcasm is argument.

Reasoning draws a conclusion, but does not make the conclusion certain, unless the mind discovers it by the path of experience.

Euclid taught me that without assumptions there is no proof. Therefore, in any argument, examine the assumptions.

The knowledge of the theory of logic has no tendency whatever to make men good reasoners.

It is true the orator may make a myriad replica of his own passion out of those who listen to him. But that does not prove he is right or they are not fools.

Rhetoric is cheap, evidence comes more dearly.

Logic is the technique by which we add conviction to truth.

What can be asserted without proof can be dismissed without proof

In my opinion, it helps enormously to know why something is true, rather than being told it is true, for why should you believe me? Never believe anything on the authority of a single person but seek confirmation — and reason is the best confirmation

When a thing is said to be not worth refuting you may be sure that either it is flagrantly stupid—in which case all comment is superfluous—or it is something formidable, the very crux of the problem.

Logic can become enormously difficult, and it would undoubtedly be well to produce more assurance in its use.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.