I have to see it, to believe it.

I'm sorry. Call me a skeptic. Call me non-scientific. I have to see something that qualifies as "tangible proof" in order to acknowledge its existence.

I have read some of these books you mentioned. I have read the arguments that state essentially that "we only see that portion of nature and everyday events that occupies our 3-dimensional world." And I understand that they are arguing that there may be extended "happenings" overlapping into higher dimensions we cannot see. However, other than shear conjecture, what proof do we have that this is true? Why should I accept the hypothesis that a quark's behavior can be explained by its movement in and out of higher dimensions? Why should I explain our failure to see God on His occupancy of a higher dimension outside our human perceptions?

The part about God I have the most trouble understanding is if it is important for us to believe; then why would God make it so difficult perceptually for us to see physical proof?