How do we know what is real? How do we know if anything we believe is real is actually real? How do our brains process the sensory data and produce our perception of the world we live in?
This is one of the best books I have found that covers western philosophy and it's evolving understanding of how we think, how our minds work and how the reality we perceive is created. It would seem that east and west are close to a juncture point of understanding the real nature of reality.