Roger Bacon Quotes

A proof tells us where to concentrate our doubts.

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.

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

It was one thing to have guessed it, another to have had that guess confirmed beyond possibility of refutation.

Supposing is good, but finding out is better.

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.

I think it will be found that experience, the true source and foundation of all knowledge, invariably confirms its truth.

We must reinforce argument with results.

Proof rather than argument.

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.

A thing that nobody believes cannot be proved too often.

It's not what you know, it's what you can prove.

Truth is what stands the test of experience.

The things of which we want the proof are those we know the best.

I don't have to have faith, I have experience.

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.

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

A scientist who cannot prove what he has accomplished, has accomplished nothing.

The true method of knowledge is experiment.

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

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

If all you have is faith, then you never actually know anything.

Science has proof without any certainty. Creationists have certainty without any proof.

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