I am a great believer rather than the popular scientific way of dealing with things that 'Nothing exists unless you can prove it'. I am pretty much the other way that pretty much anything can exist unless you can disprove it.

if you cannot prove it, you do not know it’s true.

"Because we cannot discover God's throne in the sky with a radiotelescope or establish (for certain) that a beloved father or mother is still about in a more or less corporeal form, people assume that such ideas are "not true." I would rather say that they are not "true" enough, for these are conceptions of a kind that have accompanied human life from prehistoric times, and that still break through into consciousness at any provocation.

Modern man may assert that he can dispose with them, and he may bolster his opinion by insisting that there is no scientific evidence of their truth. Or he may even regret the loss of his convictions. But since we are dealing with invisible and unknowable things (for God is beyond human understanding, and there is no means of proving immortality), why should we bother about evidence? Even if we did not know by reason our need for salt in our food, we should nonetheless profit from its use. We might argue that the use of salt is a mere illusion of taste or a superstition; but it would still contribute to our well-being. Why, then, should we deprive ourselves of views that would prove helpful in crises and would give a meaning to our existence?

And how do we know that such ideas are not true? Many people would agree with me if I stated flatly that such ideas are probably illusions. What they fail to realize is that the denial is as impossible to "prove" as the assertion of religious belief. We are entirely free to choose which point of view we take; it will in any case be an arbitrary decision.

There is, however, a strong empirical reason why we should cultivate thoughts that can never be proved. It is that they are known to be useful. Man positively needs general ideas and convictions that will give a meaning to his life and enable him to find a place for himself in the universe. He can stand the most incredible hardships when he is convinced that they make sense; he is crushed when, on top of all his misfortunes, he has to admit t

Reality can neither be proved nor disproved. Within the mind you cannot, beyond the mind you need not. In the real, the question 'what is real?' does not arise. (...)

Can you disbelieve in something you don't know about? […] It isn't that I don't believe but that I don't know.

When people say they are atheists they don’t mean they can’t prove that there are no gods. Strictly speaking, it’s impossible to prove that something does not exist. We don’t positively know there are no gods, just as we can’t prove that there are no fairies or pixies or elves or hobgoblins or leprechauns or pink unicorns; just as we can’t prove that Santa Claus or the Easter Bunny or the Tooth Fairy don’t exist. There’s a billion things you can imagine and nobody can disprove.

I am assuming that God exists and I am glad that there is no way to prove this. [Because] I would run through the proof once, and then I'd forget it, and I would never speculate about spiritual things and mysteries otherwise. And, I think, my life would be very incomplete.

I mean, you could claim that anything's real if the only basis for believing in it is that nobody's proved it doesn't exist!

Modern man may assert that he can dispense with them, and he may bolster his opinion by insisting that there is no scientific evidence of their truth. But since we are dealing with invisible and unknowable things (for God is beyond human understanding, and there is no mean of proving immortality), why should we bother with evidence?

It is now generally admitted, at any rate by philosophers, that the existence of a being having the attributes which define the god of any non-animistic religion cannot be demonstratively proved... [A]ll utterances about the nature of God are nonsensical.

Finding ourselves in a universe that seems bent on destroying us, we quickly discover, both as individuals and as societies, that it is a good thing to understand the forces arrayed against us. And so it is that every human being comes to desire genuine knowledge about the world. This has always posed a special problem for religion, because every religion preaches the truth of propositions for which it has no evidence. In facet, every religion preaches the truth of propositions for which no evidence is even conceivable.

Such reasoning [that God cannot be falsified] is absurd. Why would anyone try to prove that God doesn't exist when it can be proven that He does? Creation proves scientifically and absolutely to any sane mind that there is a Creator. His existence is axiomatic.

I cannot prove that gods do not exist. Nor can I prove that the world and everything in it was not created by an entity or entities in the distant past. But I can tell you that in the millennia we elves have studied nature, we have never witnessed an instance where the rules that govern the world have been broken. That is, we have never seen a miracle. Many events have defied our ability to explain, but we are convinced that we failed because we are still woefully ignorant about the universe and not because a deity altered the workings of nature.

[...] we can find no true or existent fact, no true assertion, without there being a sufficient reason why it is thus and not otherwise, although most of the time these reasons cannot be known to us.