Can't resist adding a religious bent to this -
The fact that we can't seem to find the absolute truth is a very compelling reason to conceive of a God that is omnipotent. This then, becomes an absolute truth...
Because we can conclude that the interpretations based on our sensory inputs, coupled with the inherent processing of our minds, are purely SUBJECTIVE, its nice to imagine a God that we can't sense, is all powerful, and based purely on faith...
What if we were God? What if everything were one? (meaning that all things, quite literally are one, as in a big ol' clump) Then 1+1 loses its meaning because there IS only 1. It would be quite hard to perceive ANYTHING if EVERYTHING was 1. Maybe everything that we 'perceive' is just an illusion that facilitates our self-awareness...we have to perceive of something that ISN'T us in order to perceive ourselves, right?
Seems like a plausible (albeit far-fetched) rationale. The illusion has just gotten out of control, that's why it defys logical explanation.
Sorry I can't recommend any books for you, which was what you'd asked for...