Morris Kline Quotes

Argument is conclusive, but it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method of experiment.

A thing that nobody believes cannot be proved too often.

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.

The first precept was never to accept a thing as true until I knew it as such without a single doubt.

Faith is an island in the setting sun, But proof is the bottom line for everyone.

Rhetoric is cheap, evidence comes more dearly.

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

Proof tells us where to concentrate our doubts.

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

People are always demanding proof. These are things that are not easily proved.

Doubt, indulged and cherished, is in danger of becoming denial; but if honest, and bent on thorough investigation, it may soon lead to full establishment of the truth.

Persuasion is clearly a sort of demonstration, since we are most fully persuaded when we consider a thing to have been demonstrated.

The truth is always the strongest argument.

A hundred suspicions don't make a proof.

That which needs to be proved cannot be worth much.

The facts are on our side.

The word 'belief' is a difficult thing for me. I don't believe. I must have a reason for a certain hypothesis. Either I know a thing, and then I know it - I don't need to believe it.

We need proof in our society.

Any fact is better established by two or three good testimonies than by a thousand arguments.

I mean the word proof not in the sense of the lawyers, who set two half proofs equal to a whole one, but in the sense of a mathematician, where half proof = 0, and it is demanded for proof that every doubt becomes impossible.

Who never doubted, never half believed. Where doubt is, there truth is - it is her shadow.

We must never assume that which is incapable of proof.

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.

One must verify or expel his doubts, and convert them into the certainty of Yes or NO.

We must reinforce argument with results.