We can only know our own model of Reality.

Words of Fire, Ink of Blood: Beyond Belief - Or How We Can Stop Killing Each Other In A Few Easy Steps (version 1.1):

"No model that attempts to take into account the 'true' nature of Universe can be proved or disproved, we just don't have the information (as our brains reside within Universe, and a very small part of Universe at that, and to 'understand' Universe we would have to have brains that are capable of holding 'all' data in Universe which would take, well roughly a brain that would be equal to the size of Universe to contain all the information, which seems to be, plainly impossible).

..Any model that YOU choose can also be a very effective form of rebellion - the biggest 'fuck you' to all those people out there who try to program your brain for you. In my view, in the nature of religious models of all types, none can be empirically proven to be 'true' or 'false' but I find this the fun bit, so long as it works for you, does it really matter? You also don't have to stick to one model all your life, try out a few........see which one works best. To me it appears less a matter of what 'is true' and what 'is false' than primarily a matter of utility. Choose what you want to believe in and if it benefits you, than it has a certain amount of 'utility' in your life, and if it has 'utility' then should be worth keeping. Of course you should consider bearing in mind that what has 'utility' for you might not have the same effect on others, or me, but that's ok...

...The point being, that if you have a true/false approach to religion or spirituality, you will find that many ideas or opinions that you have, once contradicted by another group or person (even if they do not intend to criticize you or your beliefs) will immediately cause 'you' (being a person who has a dualistic belief system) to feel that your beliefs 'are being threatened' or invalidated by this other. Thus, you either have to convince him or her that you 'are right' (convert them) or get rid of them (burn the damn heretic). Also this kind of thinking in my opinion tends to cause the individual to seek out more people that agree with exactly the same dogma as they themselves do, as a way of validating their own beliefs (This seems to lead to thinking that, the more of 'us' there are the more 'real' our Deity is.) When these groups form you tend to start to hear phrases like 'Look all of these guys think the same way boy, and you're a long way from home.' Then it tends to be in the interest of your own health to agree with them - or invest in some security for your home."